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Addition Within 100

Grade 2 · On-level practice · 14 questions · Version PG-NZEK8I-WZ9S

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1.1 + 72 =
2.81 + 13 =
3.74 + 26 =
4.34 + 64 =
5.49 + 33 =
6.79 + 21 =
7.55 + 2 =
8.18 + 58 =
9.39 + 50 =
10.51 + 27 =
11.54 + 46 =
12.78 + 22 =
13.60 + 40 =
14.40 + 2 =

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 18
  1. 1 + 72 =73
  2. 81 + 13 =94
  3. 74 + 26 =100
  4. 34 + 64 =98
  5. 49 + 33 =82
  6. 79 + 21 =100
  7. 55 + 2 =57
  8. 18 + 58 =76
  9. 39 + 50 =89
  10. 51 + 27 =78
  11. 54 + 46 =100
  12. 78 + 22 =100
  13. 60 + 40 =100
  14. 40 + 2 =42

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.