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Addition Within 100

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

1.

1 + 50 =

2.

52 + 48 =

3.

40 + 43 =

4.

21 + 17 =

5.

25 + 75 =

6.

19 + 34 =

7.

21 + 75 =

8.

62 + 34 =

9.

2 + 26 =

10.

73 + 27 =

11.

63 + 28 =

12.

77 + 23 =

13.

47 + 53 =

14.

72 + 14 =

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 8
  1. 1 + 50 =51
  2. 52 + 48 =100
  3. 40 + 43 =83
  4. 21 + 17 =38
  5. 25 + 75 =100
  6. 19 + 34 =53
  7. 21 + 75 =96
  8. 62 + 34 =96
  9. 2 + 26 =28
  10. 73 + 27 =100
  11. 63 + 28 =91
  12. 77 + 23 =100
  13. 47 + 53 =100
  14. 72 + 14 =86

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.