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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 402 · 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.Pooja has 5 shells and gets 13 shells more. How many shells does Pooja have now?
  2. 2.? + 4 = 12
  3. 3.Isha has 15 balloons and gets 2 balloons more. How many balloons does Isha have now?
  4. 4.Lakshmi has 10 flowers and gets 1 flower more. How many flowers does Lakshmi have now?
  5. 5.12 + 2 =
  6. 6.4 + 8 + 6 =
  7. 7.There are 11 red beads and 7 yellow beads. How many beads are there in all?
  8. 8.There are 4 blue flowers and 13 yellow flowers. How many flowers are there in all?
  9. 9.Tara has 7 marbles and gets 4 marbles more. How many marbles does Tara have now?
  10. 10.Ishaan has 14 flowers and gets 6 flowers more. How many flowers does Ishaan have now?
  11. 11.There are 10 yellow balloons and 9 white balloons. How many balloons are there in all?
  12. 12.There are 12 blue flowers and 7 red flowers. How many flowers are there in all?
  13. 13.6 + 7 =
  14. 14.9 + ? = 13
  15. 15.There are 7 red beads and 6 yellow beads. How many beads are there in all?
  16. 16.13 + 5 =
  17. 17.3 + 14 =
  18. 18.7 + ? = 11
  19. 19.18 + 1 =
  20. 20.1 + 8 =
  21. 21.There are 12 yellow kites and 2 red kites. How many kites are there in all?
  22. 22.Nisha has 12 flowers and gets 8 flowers more. How many flowers does Nisha have now?
  23. 23.Gurpreet has 7 laddoos and gets 8 laddoos more. How many laddoos does Gurpreet have now?
  24. 24.16 + 4 =
  25. 25.2 + 4 =
  26. 26.Saanvi has 15 flowers and gets 1 flower more. How many flowers does Saanvi have now?
  27. 27.5 + 2 + 4 =
  28. 28.Lakshmi has 9 balls and gets 3 balls more. How many balls does Lakshmi have now?
  29. 29.There are 5 blue flowers and 3 green flowers. How many flowers are there in all?
  30. 30.16 + 3 =
  31. 31.8 + 9 =
  32. 32.18 + 2 =
  33. 33.There are 12 green balloons and 5 red balloons. How many balloons are there in all?
  34. 34.Gurpreet has 9 marbles and gets 7 marbles more. How many marbles does Gurpreet have now?
  35. 35.6 + 1 + 13 =
  36. 36.3 + 3 + 8 =
  37. 37.Saanvi has 2 balloons and gets 2 balloons more. How many balloons does Saanvi have now?
  38. 38.5 + 7 + 5 =
  39. 39.There are 12 blue crayons and 7 pink crayons. How many crayons are there in all?
  40. 40.There are 11 blue beads and 6 green beads. How many beads are there in all?

Answer key

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

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