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Addition Within 100

Grade 2 · On-level practice · 14 questions · Version PG-OJDRMG-WZ9S

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1.85 + 15 =
2.43 + 57 =
3.61 + 9 =
4.45 + 45 =
5.47 + 29 =
6.23 + 77 =
7.91 + 9 =
8.76 + 24 =
9.51 + 49 =
10.32 + 41 =
11.20 + 80 =
12.23 + 3 =
13.25 + 34 =
14.99 + 1 =

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 16
  1. 85 + 15 =100
  2. 43 + 57 =100
  3. 61 + 9 =70
  4. 45 + 45 =90
  5. 47 + 29 =76
  6. 23 + 77 =100
  7. 91 + 9 =100
  8. 76 + 24 =100
  9. 51 + 49 =100
  10. 32 + 41 =73
  11. 20 + 80 =100
  12. 23 + 3 =26
  13. 25 + 34 =59
  14. 99 + 1 =100

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.