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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 16 · 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. 2.3 + ? = 4
  3. 3.? + 1 = 5
  4. 4.Aarav has 11 marbles and gets 9 marbles more. How many marbles does Aarav have now?
  5. 5.? + 5 = 14
  6. 6.There are 11 blue flowers and 2 green flowers. How many flowers are there in all?
  7. 7.3 + 5 + 2 =
  8. 8.? + 3 = 6
  9. 9.Ananya has 13 crayons and gets 3 crayons more. How many crayons does Ananya have now?
  10. 10.Vivaan has 3 kites and gets 1 kite more. How many kites does Vivaan have now?
  11. 11.14 + 4 =
  12. 12.Aarav has 8 shells and gets 10 shells more. How many shells does Aarav have now?
  13. 13.4 + ? = 5
  14. 14.5 + 5 + 5 =
  15. 15.18 + 1 =
  16. 16.15 + 1 =
  17. 17.There are 10 red beads and 8 pink beads. How many beads are there in all?
  18. 18.There are 5 red flowers and 14 pink flowers. How many flowers are there in all?
  19. 19.12 + 5 =
  20. 20.9 + ? = 15
  21. 21.There are 9 white flowers and 3 pink flowers. How many flowers are there in all?
  22. 22.There are 11 pink kites and 8 yellow kites. How many kites are there in all?
  23. 23.11 + 8 =
  24. 24.7 + 2 + 2 =
  25. 25.4 + 8 + 7 =
  26. 26.Ishaan has 12 mangoes and gets 4 mangoes more. How many mangoes does Ishaan have now?
  27. 27.There are 8 pink balls and 2 yellow balls. How many balls are there in all?
  28. 28.5 + 4 =
  29. 29.Kabir has 12 balls and gets 7 balls more. How many balls does Kabir have now?
  30. 30.4 + 7 =
  31. 31.4 + 8 + 5 =
  32. 32.14 + 3 =
  33. 33.There are 10 white kites and 6 red kites. How many kites are there in all?
  34. 34.1 + 3 + 14 =
  35. 35.4 + 1 + 15 =
  36. 36.1 + 8 + 4 =
  37. 37.6 + 6 + 2 =
  38. 38.There are 3 yellow beads and 11 red beads. How many beads are there in all?
  39. 39.? + 16 = 17
  40. 40.There are 7 pink crayons and 8 white crayons. How many crayons are there in all?

Answer key

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

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