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Addition Within 100

Grade 2 · Building confidence · 14 questions · Version PG-KLVDNJ-1DIA

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1.56 + 44 =
2.50 + 50 =
3.37 + 24 =
4.2 + 79 =
5.87 + 13 =
6.73 + 18 =
7.9 + 70 =
8.13 + 41 =
9.73 + 19 =
10.42 + 58 =
11.10 + 90 =
12.68 + 32 =
13.86 + 3 =
14.24 + 59 =

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 4
  1. 56 + 44 =100
  2. 50 + 50 =100
  3. 37 + 24 =61
  4. 2 + 79 =81
  5. 87 + 13 =100
  6. 73 + 18 =91
  7. 9 + 70 =79
  8. 13 + 41 =54
  9. 73 + 19 =92
  10. 42 + 58 =100
  11. 10 + 90 =100
  12. 68 + 32 =100
  13. 86 + 3 =89
  14. 24 + 59 =83

Worked example

38 + 24 = 62. Add ones: 8 + 4 = 12, regroup 1 ten, then add tens.

Common mistake

Forgetting to add the regrouped ten.

Helpful hint

Line up ones with ones and tens with tens.