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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 290 · 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.Riya has 3 shells and gets 10 shells more. How many shells does Riya have now?
  2. 2.There are 9 blue flowers and 9 yellow flowers. How many flowers are there in all?
  3. 3.3 + 5 + 11 =
  4. 4.13 + 7 =
  5. 5.Nisha has 7 bananas and gets 7 bananas more. How many bananas does Nisha have now?
  6. 6.15 + 2 =
  7. 7.There are 9 white beads and 8 red beads. How many beads are there in all?
  8. 8.3 + 8 + 1 =
  9. 9.2 + ? = 3
  10. 10.1 + ? = 8
  11. 11.17 + 1 =
  12. 12.There are 7 blue balloons and 2 pink balloons. How many balloons are there in all?
  13. 13.1 + 8 =
  14. 14.There are 10 pink crayons and 10 blue crayons. How many crayons are there in all?
  15. 15.5 + 1 + 4 =
  16. 16.There are 7 pink flowers and 6 blue flowers. How many flowers are there in all?
  17. 17.? + 2 = 13
  18. 18.There are 12 yellow flowers and 3 white flowers. How many flowers are there in all?
  19. 19.3 + ? = 19
  20. 20.3 + 8 + 8 =
  21. 21.There are 2 white crayons and 6 blue crayons. How many crayons are there in all?
  22. 22.8 + 3 + 4 =
  23. 23.6 + 3 + 9 =
  24. 24.Isha has 14 laddoos and gets 3 laddoos more. How many laddoos does Isha have now?
  25. 25.? + 2 = 8
  26. 26.Sneha has 4 marbles and gets 9 marbles more. How many marbles does Sneha have now?
  27. 27.2 + 1 + 5 =
  28. 28.6 + 13 =
  29. 29.Meera has 5 crayons and gets 8 crayons more. How many crayons does Meera have now?
  30. 30.4 + 9 =
  31. 31.? + 9 = 19
  32. 32.17 + 3 =
  33. 33.6 + 5 + 6 =
  34. 34.2 + 9 =
  35. 35.1 + 19 =
  36. 36.There are 4 pink flowers and 13 yellow flowers. How many flowers are there in all?
  37. 37.14 + 6 =
  38. 38.6 + 3 + 10 =
  39. 39.There are 4 yellow crayons and 9 white crayons. How many crayons are there in all?
  40. 40.? + 1 = 4

Answer key

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

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