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Addition Within 100

Grade 2 · On-level practice · 14 questions · Version PG-1PLVNUF-WZ9S

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1.70 + 24 =
2.5 + 57 =
3.53 + 47 =
4.0 + 5 =
5.91 + 9 =
6.57 + 28 =
7.74 + 26 =
8.87 + 13 =
9.14 + 70 =
10.57 + 43 =
11.93 + 7 =
12.75 + 25 =
13.37 + 63 =
14.49 + 51 =

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 6
  1. 70 + 24 =94
  2. 5 + 57 =62
  3. 53 + 47 =100
  4. 0 + 5 =5
  5. 91 + 9 =100
  6. 57 + 28 =85
  7. 74 + 26 =100
  8. 87 + 13 =100
  9. 14 + 70 =84
  10. 57 + 43 =100
  11. 93 + 7 =100
  12. 75 + 25 =100
  13. 37 + 63 =100
  14. 49 + 51 =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.