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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 954 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.19 + 1 =
  2. 2.9 + 4 =
  3. 3.There are 4 white crayons and 3 red crayons. How many crayons are there in all?
  4. 4.14 + 6 =
  5. 5.There are 7 pink kites and 8 red kites. How many kites are there in all?
  6. 6.? + 14 = 20
  7. 7.4 + 3 + 1 =
  8. 8.1 + 10 =
  9. 9.There are 4 red kites and 16 yellow kites. How many kites are there in all?
  10. 10.2 + 3 + 10 =
  11. 11.5 + 4 + 11 =
  12. 12.There are 8 red beads and 6 blue beads. How many beads are there in all?
  13. 13.7 + 5 + 3 =
  14. 14.1 + 5 + 4 =
  15. 15.There are 2 green flowers and 16 blue flowers. How many flowers are there in all?
  16. 16.5 + 1 + 8 =
  17. 17.There are 4 yellow balloons and 10 red balloons. How many balloons are there in all?
  18. 18.16 + 3 =
  19. 19.? + 6 = 15
  20. 20.8 + 4 + 1 =
  21. 21.There are 5 red flowers and 3 green flowers. How many flowers are there in all?
  22. 22.2 + 8 + 3 =
  23. 23.There are 12 pink balls and 3 white balls. How many balls are there in all?
  24. 24.11 + 8 =
  25. 25.6 + 1 + 4 =
  26. 26.10 + ? = 13
  27. 27.17 + 2 =
  28. 28.There are 6 blue kites and 11 yellow kites. How many kites are there in all?
  29. 29.There are 10 red balloons and 5 green balloons. How many balloons are there in all?
  30. 30.3 + ? = 5
  31. 31.There are 4 pink balls and 16 yellow balls. How many balls are there in all?
  32. 32.Tara has 8 flowers and gets 5 flowers more. How many flowers does Tara have now?
  33. 33.There are 4 blue kites and 15 green kites. How many kites are there in all?
  34. 34.12 + ? = 13
  35. 35.There are 9 pink crayons and 3 yellow crayons. How many crayons are there in all?
  36. 36.1 + ? = 11
  37. 37.There are 5 white beads and 15 yellow beads. How many beads are there in all?
  38. 38.5 + 3 =
  39. 39.Meera has 3 bananas and gets 6 bananas more. How many bananas does Meera have now?
  40. 40.1 + ? = 12

Answer key

  1. 20
  2. 13
  3. 7
  4. 20
  5. 15
  6. 6
  7. 8
  8. 11
  9. 20
  10. 15
  11. 20
  12. 14
  13. 15
  14. 10
  15. 18
  16. 14
  17. 14
  18. 19
  19. 9
  20. 13
  21. 8
  22. 13
  23. 15
  24. 19
  25. 11
  26. 3
  27. 19
  28. 17
  29. 15
  30. 2
  31. 20
  32. 13
  33. 19
  34. 1
  35. 12
  36. 10
  37. 20
  38. 8
  39. 9
  40. 11

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