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Addition Within 100

Grade 2 · On-level practice · 14 questions · Version PG-1O7XNDK-WZ9S

1.

85 + 15 =

2.

38 + 62 =

3.

39 + 61 =

4.

90 + 10 =

5.

11 + 65 =

6.

54 + 46 =

7.

70 + 30 =

8.

17 + 27 =

9.

73 + 25 =

10.

74 + 26 =

11.

38 + 52 =

12.

67 + 33 =

13.

24 + 59 =

14.

12 + 27 =

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 3
  1. 85 + 15 =100
  2. 38 + 62 =100
  3. 39 + 61 =100
  4. 90 + 10 =100
  5. 11 + 65 =76
  6. 54 + 46 =100
  7. 70 + 30 =100
  8. 17 + 27 =44
  9. 73 + 25 =98
  10. 74 + 26 =100
  11. 38 + 52 =90
  12. 67 + 33 =100
  13. 24 + 59 =83
  14. 12 + 27 =39

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.