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Addition Within 100

Grade 2 · On-level practice · 14 questions · Version PG-1PVV9JE-WZ9S

1.

12 + 88 =

2.

59 + 41 =

3.

53 + 36 =

4.

14 + 33 =

5.

45 + 55 =

6.

33 + 67 =

7.

58 + 3 =

8.

1 + 5 =

9.

90 + 10 =

10.

21 + 14 =

11.

79 + 21 =

12.

79 + 17 =

13.

93 + 7 =

14.

67 + 33 =

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 5
  1. 12 + 88 =100
  2. 59 + 41 =100
  3. 53 + 36 =89
  4. 14 + 33 =47
  5. 45 + 55 =100
  6. 33 + 67 =100
  7. 58 + 3 =61
  8. 1 + 5 =6
  9. 90 + 10 =100
  10. 21 + 14 =35
  11. 79 + 21 =100
  12. 79 + 17 =96
  13. 93 + 7 =100
  14. 67 + 33 =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.