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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 378 · 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.Kabir has 9 kites and gets 2 kites more. How many kites does Kabir have now?
  2. 2.Riya has 11 balls and gets 6 balls more. How many balls does Riya have now?
  3. 3.1 + 3 + 11 =
  4. 4.11 + 7 =
  5. 5.There are 2 blue balloons and 6 pink balloons. How many balloons are there in all?
  6. 6.15 + 3 =
  7. 7.8 + 4 + 8 =
  8. 8.7 + 13 =
  9. 9.There are 5 yellow crayons and 13 white crayons. How many crayons are there in all?
  10. 10.There are 6 white balloons and 10 red balloons. How many balloons are there in all?
  11. 11.Pooja has 2 shells and gets 14 shells more. How many shells does Pooja have now?
  12. 12.6 + ? = 8
  13. 13.2 + ? = 9
  14. 14.3 + 1 + 8 =
  15. 15.18 + 1 =
  16. 16.There are 10 red flowers and 5 green flowers. How many flowers are there in all?
  17. 17.5 + 2 + 12 =
  18. 18.4 + 7 + 7 =
  19. 19.5 + 8 =
  20. 20.9 + 2 =
  21. 21.There are 2 blue crayons and 11 white crayons. How many crayons are there in all?
  22. 22.4 + 15 =
  23. 23.12 + 5 =
  24. 24.Meera has 8 shells and gets 1 shell more. How many shells does Meera have now?
  25. 25.1 + 3 + 13 =
  26. 26.3 + 3 + 4 =
  27. 27.9 + 3 =
  28. 28.Priya has 15 flowers and gets 4 flowers more. How many flowers does Priya have now?
  29. 29.5 + 6 + 7 =
  30. 30.Kabir has 3 flowers and gets 2 flowers more. How many flowers does Kabir have now?
  31. 31.1 + ? = 5
  32. 32.3 + 15 =
  33. 33.Isha has 5 laddoos and gets 14 laddoos more. How many laddoos does Isha have now?
  34. 34.5 + 3 + 9 =
  35. 35.Sneha has 15 balls and gets 4 balls more. How many balls does Sneha have now?
  36. 36.There are 7 yellow beads and 5 white beads. How many beads are there in all?
  37. 37.There are 8 green beads and 9 yellow beads. How many beads are there in all?
  38. 38.12 + 8 =
  39. 39.7 + 9 =
  40. 40.There are 7 green balls and 5 red balls. How many balls are there in all?

Answer key

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

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