Worksheet

Missing Number Facts Within 20

Grade 2 Math Worksheet

NameDate

Find the missing number.

  1. 13 + = 16

  2. 9 + = 14

  3. 12 + = 14

  4. 4 + = 12

  5. 3 + = 16

  6. 12 + = 13

  7. 2 + = 6

  8. 4 + = 8

  9. 1 + = 11

  10. 14 + = 18

  11. 9 + = 18

  12. 8 + = 14

  13. 9 + = 16

  14. 2 + = 10

  15. 1 + = 6

  16. 2 + = 15

  17. 9 + = 20

  18. 8 + = 11

  19. 9 + = 13

  20. 4 + = 17

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Missing Number Facts Within 20

Answer Key - Grade 2 Math Worksheet

Find the missing number.

  1. 13 + 3 = 16

  2. 9 + 5 = 14

  3. 12 + 2 = 14

  4. 4 + 8 = 12

  5. 3 + 13 = 16

  6. 12 + 1 = 13

  7. 2 + 4 = 6

  8. 4 + 4 = 8

  9. 1 + 10 = 11

  10. 14 + 4 = 18

  11. 9 + 9 = 18

  12. 8 + 6 = 14

  13. 9 + 7 = 16

  14. 2 + 8 = 10

  15. 1 + 5 = 6

  16. 2 + 13 = 15

  17. 9 + 11 = 20

  18. 8 + 3 = 11

  19. 9 + 4 = 13

  20. 4 + 13 = 17