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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 320 · 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. 1.6 + 9 =
  2. 2.There are 9 green flowers and 8 white flowers. How many flowers are there in all?
  3. 3.6 + 2 + 9 =
  4. 4.Pooja has 4 kites and gets 7 kites more. How many kites does Pooja have now?
  5. 5.2 + 3 + 2 =
  6. 6.5 + 2 =
  7. 7.2 + ? = 10
  8. 8.Kabir has 2 balloons and gets 3 balloons more. How many balloons does Kabir have now?
  9. 9.11 + 1 =
  10. 10.Kabir has 14 crayons and gets 4 crayons more. How many crayons does Kabir have now?
  11. 11.There are 2 blue balls and 9 green balls. How many balls are there in all?
  12. 12.5 + 2 + 2 =
  13. 13.4 + 4 + 3 =
  14. 14.? + 6 = 7
  15. 15.8 + 4 + 6 =
  16. 16.? + 16 = 17
  17. 17.19 + 1 =
  18. 18.There are 6 green crayons and 8 yellow crayons. How many crayons are there in all?
  19. 19.? + 4 = 5
  20. 20.9 + 4 =
  21. 21.7 + 2 + 8 =
  22. 22.Isha has 11 flowers and gets 8 flowers more. How many flowers does Isha have now?
  23. 23.14 + 3 =
  24. 24.There are 6 white balloons and 8 red balloons. How many balloons are there in all?
  25. 25.7 + 1 + 8 =
  26. 26.12 + ? = 19
  27. 27.Rohan has 13 crayons and gets 3 crayons more. How many crayons does Rohan have now?
  28. 28.1 + ? = 10
  29. 29.2 + ? = 11
  30. 30.5 + ? = 7
  31. 31.Vivaan has 2 marbles and gets 16 marbles more. How many marbles does Vivaan have now?
  32. 32.Pooja has 6 marbles and gets 3 marbles more. How many marbles does Pooja have now?
  33. 33.There are 3 white beads and 9 pink beads. How many beads are there in all?
  34. 34.8 + 2 + 3 =
  35. 35.Rahul has 2 shells and gets 5 shells more. How many shells does Rahul have now?
  36. 36.There are 12 yellow flowers and 2 blue flowers. How many flowers are there in all?
  37. 37.There are 2 yellow kites and 15 blue kites. How many kites are there in all?
  38. 38.7 + 8 =
  39. 39.8 + ? = 15
  40. 40.There are 3 red crayons and 5 yellow crayons. How many crayons are there in all?

Answer key

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

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