Worksheet

Addition Within 20

Grade 1 Math Worksheet

NameDate

Write the answer on the line.

  1. 6 + 7 =

  2. 10 + 7 =

  3. 5 + 6 =

  4. 8 + 4 =

  5. 7 + 8 =

  6. 5 + 8 =

  7. 5 + 7 =

  8. 9 + 2 =

  9. 9 + 9 =

  10. 7 + 9 =

  11. 4 + 9 =

  12. 3 + 9 =

  13. 10 + 3 =

  14. 8 + 8 =

  15. 9 + 6 =

  16. 6 + 10 =

  17. 5 + 10 =

  18. 8 + 6 =

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Addition Within 20

Answer Key - Grade 1 Math Worksheet

Write the answer on the line.

  1. 6 + 7 = 13

  2. 10 + 7 = 17

  3. 5 + 6 = 11

  4. 8 + 4 = 12

  5. 7 + 8 = 15

  6. 5 + 8 = 13

  7. 5 + 7 = 12

  8. 9 + 2 = 11

  9. 9 + 9 = 18

  10. 7 + 9 = 16

  11. 4 + 9 = 13

  12. 3 + 9 = 12

  13. 10 + 3 = 13

  14. 8 + 8 = 16

  15. 9 + 6 = 15

  16. 6 + 10 = 16

  17. 5 + 10 = 15

  18. 8 + 6 = 14