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Chapter 16: Addition Meaning and Strategies

Learn Grade 2 mathematics with very-beginner explanations, original worked examples, practice, reasoning, and review.

Grade 2Very Beginner Friendly10 Examples Per Topic30 Q&APractice + Review
Estimated reading time0% read
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Chapter Overview

This chapter teaches Addition Meaning and Strategies with simple explanations, visual thinking, worked examples, practice, and review.

16.1 Addition as joining

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 63 + 20.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 83

Worked Example 2

Problem: Find 46 + 22.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 68

Worked Example 3

Problem: Find 28 + 35.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 63

Worked Example 4

Problem: Find 23 + 22.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 45

Worked Example 5

Problem: Find 67 + 44.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 111

Worked Example 6

Problem: Find 25 + 11.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 36

Worked Example 7

Problem: Find 6 + 14.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 20

Worked Example 8

Problem: Find 15 + 42.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 57

Worked Example 9

Problem: Find 3 + 65.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 68

Worked Example 10

Problem: Find 18 + 23.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 41

16.2 Addition as combining

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 48 + 3.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 51

Worked Example 2

Problem: Find 49 + 37.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 86

Worked Example 3

Problem: Find 4 + 37.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 41

Worked Example 4

Problem: Find 3 + 49.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 52

Worked Example 5

Problem: Find 57 + 14.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 71

Worked Example 6

Problem: Find 51 + 29.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 80

Worked Example 7

Problem: Find 19 + 67.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 86

Worked Example 8

Problem: Find 5 + 68.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 73

Worked Example 9

Problem: Find 65 + 57.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 122

Worked Example 10

Problem: Find 65 + 13.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 78

16.3 Addition as counting on

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 15 + 58.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 73

Worked Example 2

Problem: Find 15 + 12.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 27

Worked Example 3

Problem: Find 68 + 29.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 97

Worked Example 4

Problem: Find 3 + 51.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 54

Worked Example 5

Problem: Find 33 + 4.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 37

Worked Example 6

Problem: Find 55 + 49.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 104

Worked Example 7

Problem: Find 9 + 47.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 56

Worked Example 8

Problem: Find 39 + 65.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 104

Worked Example 9

Problem: Find 33 + 44.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 77

Worked Example 10

Problem: Find 7 + 9.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 16

16.4 Addition on a number line

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 37 + 45.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 82

Worked Example 2

Problem: Find 51 + 24.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 75

Worked Example 3

Problem: Find 10 + 52.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 62

Worked Example 4

Problem: Find 57 + 46.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 103

Worked Example 5

Problem: Find 28 + 33.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 61

Worked Example 6

Problem: Find 8 + 55.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 63

Worked Example 7

Problem: Find 39 + 54.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 93

Worked Example 8

Problem: Find 70 + 39.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 109

Worked Example 9

Problem: Find 34 + 39.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 73

Worked Example 10

Problem: Find 55 + 59.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 114

16.5 Using ten frames for addition

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 18 + 42.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 60

Worked Example 2

Problem: Find 37 + 26.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 63

Worked Example 3

Problem: Find 57 + 51.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 108

Worked Example 4

Problem: Find 19 + 9.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 28

Worked Example 5

Problem: Find 50 + 53.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 103

Worked Example 6

Problem: Find 64 + 22.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 86

Worked Example 7

Problem: Find 22 + 54.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 76

Worked Example 8

Problem: Find 22 + 11.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 33

Worked Example 9

Problem: Find 21 + 41.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 62

Worked Example 10

Problem: Find 7 + 27.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 34

16.6 Making ten

Making ten is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Use 15 and 20 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 2

Problem: Use 6 and 4 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 3

Problem: Use 12 and 7 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 4

Problem: Use 9 and 11 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 5

Problem: Use 20 and 20 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 6

Problem: Use 6 and 20 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 7

Problem: Use 4 and 5 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 8

Problem: Use 3 and 6 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 9

Problem: Use 4 and 16 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

Worked Example 10

Problem: Use 8 and 12 to make a simple example about Making ten.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Making ten.

16.7 Adding doubles

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 68 + 34.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 102

Worked Example 2

Problem: Find 2 + 11.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 13

Worked Example 3

Problem: Find 33 + 23.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 56

Worked Example 4

Problem: Find 12 + 42.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 54

Worked Example 5

Problem: Find 52 + 61.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 113

Worked Example 6

Problem: Find 28 + 62.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 90

Worked Example 7

Problem: Find 11 + 68.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 79

Worked Example 8

Problem: Find 37 + 56.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 93

Worked Example 9

Problem: Find 4 + 14.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 18

Worked Example 10

Problem: Find 45 + 31.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 76

16.8 Near doubles

Near doubles is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Use 13 and 20 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 2

Problem: Use 16 and 4 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 3

Problem: Use 1 and 1 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 4

Problem: Use 3 and 18 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 5

Problem: Use 18 and 14 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 6

Problem: Use 12 and 11 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 7

Problem: Use 7 and 18 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 8

Problem: Use 10 and 9 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 9

Problem: Use 1 and 3 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

Worked Example 10

Problem: Use 11 and 14 to make a simple example about Near doubles.

  1. Recall the topic meaning.
  2. Use objects, a drawing, or a number sentence.
  3. Check that the example matches the idea.

Very beginner explanation: Simple models make Grade 2 ideas easier to understand.

Answer: A correct Grade 2 example of Near doubles.

16.9 Adding zero

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 44 + 2.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 46

Worked Example 2

Problem: Find 37 + 8.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 45

Worked Example 3

Problem: Find 3 + 24.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 27

Worked Example 4

Problem: Find 50 + 7.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 57

Worked Example 5

Problem: Find 68 + 46.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 114

Worked Example 6

Problem: Find 27 + 23.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 50

Worked Example 7

Problem: Find 28 + 35.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 63

Worked Example 8

Problem: Find 28 + 10.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 38

Worked Example 9

Problem: Find 58 + 30.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 88

Worked Example 10

Problem: Find 25 + 41.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 66

16.10 Changing addend order

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 16 + 40.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 56

Worked Example 2

Problem: Find 33 + 45.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 78

Worked Example 3

Problem: Find 42 + 60.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 102

Worked Example 4

Problem: Find 47 + 65.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 112

Worked Example 5

Problem: Find 38 + 66.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 104

Worked Example 6

Problem: Find 53 + 58.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 111

Worked Example 7

Problem: Find 64 + 32.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 96

Worked Example 8

Problem: Find 7 + 37.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 44

Worked Example 9

Problem: Find 47 + 63.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 110

Worked Example 10

Problem: Find 62 + 24.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 86

16.11 Writing an addition sentence

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 48 + 47.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 95

Worked Example 2

Problem: Find 59 + 52.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 111

Worked Example 3

Problem: Find 7 + 40.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 47

Worked Example 4

Problem: Find 19 + 18.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 37

Worked Example 5

Problem: Find 47 + 25.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 72

Worked Example 6

Problem: Find 35 + 19.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 54

Worked Example 7

Problem: Find 57 + 5.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 62

Worked Example 8

Problem: Find 50 + 3.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 53

Worked Example 9

Problem: Find 22 + 2.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 24

Worked Example 10

Problem: Find 49 + 23.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 72

16.12 Choosing an addition strategy

Addition combines quantities. Counting on, making ten, drawings, and place value can help. Use objects, drawings, number lines, tables, or number sentences when useful.

10 Worked Examples with Answers

Worked Example 1

Problem: Find 46 + 36.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 82

Worked Example 2

Problem: Find 50 + 23.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 73

Worked Example 3

Problem: Find 42 + 51.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 93

Worked Example 4

Problem: Find 21 + 3.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 24

Worked Example 5

Problem: Find 51 + 69.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 120

Worked Example 6

Problem: Find 68 + 32.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 100

Worked Example 7

Problem: Find 40 + 9.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 49

Worked Example 8

Problem: Find 2 + 36.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 38

Worked Example 9

Problem: Find 69 + 61.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 130

Worked Example 10

Problem: Find 25 + 62.

  1. Start with the larger number.
  2. Add tens or make a ten if helpful.
  3. Add the remaining ones.

Very beginner explanation: Addition combines quantities.

Answer: 87

30 Review Questions and Answers

Q1. What should a Grade 2 learner understand about Addition as joining?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q2. What should a Grade 2 learner understand about Addition as combining?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q3. What should a Grade 2 learner understand about Addition as counting on?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q4. What should a Grade 2 learner understand about Addition on a number line?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q5. What should a Grade 2 learner understand about Using ten frames for addition?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q6. What should a Grade 2 learner understand about Making ten?

Answer: Making ten is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words.

Q7. What should a Grade 2 learner understand about Adding doubles?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q8. What should a Grade 2 learner understand about Near doubles?

Answer: Near doubles is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words.

Q9. What should a Grade 2 learner understand about Adding zero?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q10. What should a Grade 2 learner understand about Changing addend order?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q11. What should a Grade 2 learner understand about Writing an addition sentence?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q12. What should a Grade 2 learner understand about Choosing an addition strategy?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q13. What should a Grade 2 learner understand about Addition as joining?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q14. What should a Grade 2 learner understand about Addition as combining?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q15. What should a Grade 2 learner understand about Addition as counting on?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q16. What should a Grade 2 learner understand about Addition on a number line?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q17. What should a Grade 2 learner understand about Using ten frames for addition?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q18. What should a Grade 2 learner understand about Making ten?

Answer: Making ten is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words.

Q19. What should a Grade 2 learner understand about Adding doubles?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q20. What should a Grade 2 learner understand about Near doubles?

Answer: Near doubles is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words.

Q21. What should a Grade 2 learner understand about Adding zero?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q22. What should a Grade 2 learner understand about Changing addend order?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q23. What should a Grade 2 learner understand about Writing an addition sentence?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q24. What should a Grade 2 learner understand about Choosing an addition strategy?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q25. What should a Grade 2 learner understand about Addition as joining?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q26. What should a Grade 2 learner understand about Addition as combining?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q27. What should a Grade 2 learner understand about Addition as counting on?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q28. What should a Grade 2 learner understand about Addition on a number line?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q29. What should a Grade 2 learner understand about Using ten frames for addition?

Answer: Addition combines quantities. Counting on, making ten, drawings, and place value can help.

Q30. What should a Grade 2 learner understand about Making ten?

Answer: Making ten is a Grade 2 math idea best learned with simple numbers, objects, drawings, and clear words.