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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 617 · 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. 1.3 + 8 + 6 =
  2. 2.3 + 7 =
  3. 3.1 + 13 =
  4. 4.2 + ? = 3
  5. 5.9 + ? = 10
  6. 6.There are 11 pink kites and 9 yellow kites. How many kites are there in all?
  7. 7.2 + ? = 15
  8. 8.There are 10 green balloons and 5 pink balloons. How many balloons are there in all?
  9. 9.15 + ? = 19
  10. 10.2 + 8 + 3 =
  11. 11.2 + 8 =
  12. 12.There are 10 blue balloons and 7 yellow balloons. How many balloons are there in all?
  13. 13.? + 1 = 4
  14. 14.5 + 1 + 3 =
  15. 15.Farhan has 5 crayons and gets 4 crayons more. How many crayons does Farhan have now?
  16. 16.14 + 2 =
  17. 17.10 + 1 =
  18. 18.Dev has 3 balloons and gets 1 balloon more. How many balloons does Dev have now?
  19. 19.Meera has 2 kites and gets 10 kites more. How many kites does Meera have now?
  20. 20.There are 10 white flowers and 10 blue flowers. How many flowers are there in all?
  21. 21.There are 8 blue beads and 7 white beads. How many beads are there in all?
  22. 22.8 + 7 =
  23. 23.12 + 2 =
  24. 24.There are 4 white flowers and 11 blue flowers. How many flowers are there in all?
  25. 25.7 + 1 + 7 =
  26. 26.There are 6 yellow crayons and 5 red crayons. How many crayons are there in all?
  27. 27.There are 8 white beads and 2 green beads. How many beads are there in all?
  28. 28.There are 2 blue balloons and 10 green balloons. How many balloons are there in all?
  29. 29.There are 2 green beads and 8 pink beads. How many beads are there in all?
  30. 30.8 + 2 =
  31. 31.1 + 1 + 5 =
  32. 32.? + 2 = 9
  33. 33.There are 7 pink beads and 8 red beads. How many beads are there in all?
  34. 34.There are 10 red balls and 4 blue balls. How many balls are there in all?
  35. 35.Isha has 7 bananas and gets 8 bananas more. How many bananas does Isha have now?
  36. 36.4 + ? = 8
  37. 37.6 + ? = 15
  38. 38.5 + 4 =
  39. 39.Kabir has 3 shells and gets 3 shells more. How many shells does Kabir have now?
  40. 40.There are 12 pink kites and 3 green kites. How many kites are there in all?

Answer key

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

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