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Addition Within 100

Grade 2 · On-level practice · 14 questions · Version PG-1OHX92J-WZ9S

Four children and a teacher collaborate with blocks, patterns, and a notebook.
1.

26 + 35 =

2.

95 + 5 =

3.

70 + 21 =

4.

50 + 50 =

5.

33 + 45 =

6.

99 + 1 =

7.

1 + 11 =

8.

68 + 32 =

9.

55 + 45 =

10.

59 + 41 =

11.

3 + 51 =

12.

49 + 51 =

13.

87 + 13 =

14.

70 + 30 =

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 2
  1. 26 + 35 =61
  2. 95 + 5 =100
  3. 70 + 21 =91
  4. 50 + 50 =100
  5. 33 + 45 =78
  6. 99 + 1 =100
  7. 1 + 11 =12
  8. 68 + 32 =100
  9. 55 + 45 =100
  10. 59 + 41 =100
  11. 3 + 51 =54
  12. 49 + 51 =100
  13. 87 + 13 =100
  14. 70 + 30 =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.