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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 538 · 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.There are 10 yellow balloons and 5 pink balloons. How many balloons are there in all?
  2. 2.There are 2 pink beads and 17 green beads. How many beads are there in all?
  3. 3.5 + 15 =
  4. 4.7 + ? = 8
  5. 5.12 + ? = 20
  6. 6.Saanvi has 13 mangoes and gets 5 mangoes more. How many mangoes does Saanvi have now?
  7. 7.? + 5 = 9
  8. 8.? + 12 = 20
  9. 9.1 + 19 =
  10. 10.1 + 5 + 12 =
  11. 11.7 + 7 + 3 =
  12. 12.There are 10 yellow balls and 10 pink balls. How many balls are there in all?
  13. 13.There are 6 white kites and 3 pink kites. How many kites are there in all?
  14. 14.There are 5 red crayons and 7 yellow crayons. How many crayons are there in all?
  15. 15.10 + 2 =
  16. 16.Zoya has 11 kites and gets 1 kite more. How many kites does Zoya have now?
  17. 17.There are 11 green kites and 4 red kites. How many kites are there in all?
  18. 18.2 + 6 + 2 =
  19. 19.6 + 12 =
  20. 20.5 + ? = 11
  21. 21.There are 12 yellow kites and 2 green kites. How many kites are there in all?
  22. 22.? + 7 = 17
  23. 23.There are 12 yellow balloons and 4 white balloons. How many balloons are there in all?
  24. 24.2 + 3 =
  25. 25.1 + 5 + 1 =
  26. 26.There are 8 red balloons and 4 pink balloons. How many balloons are there in all?
  27. 27.5 + 14 =
  28. 28.1 + ? = 10
  29. 29.5 + 5 + 3 =
  30. 30.13 + 7 =
  31. 31.6 + 14 =
  32. 32.3 + 5 + 2 =
  33. 33.5 + 13 =
  34. 34.11 + 6 =
  35. 35.9 + 10 =
  36. 36.There are 3 blue beads and 12 white beads. How many beads are there in all?
  37. 37.4 + 6 + 7 =
  38. 38.There are 10 green beads and 5 white beads. How many beads are there in all?
  39. 39.Manav has 9 shells and gets 10 shells more. How many shells does Manav have now?
  40. 40.There are 2 green beads and 4 yellow beads. How many beads are there in all?

Answer key

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

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