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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 302 · 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. 1.7 + 7 + 3 =
  2. 2.17 + 2 =
  3. 3.1 + ? = 3
  4. 4.There are 12 yellow flowers and 3 white flowers. How many flowers are there in all?
  5. 5.There are 8 white kites and 7 pink kites. How many kites are there in all?
  6. 6.? + 4 = 7
  7. 7.4 + 6 + 10 =
  8. 8.14 + 3 =
  9. 9.There are 3 green crayons and 9 yellow crayons. How many crayons are there in all?
  10. 10.Lakshmi has 4 marbles and gets 12 marbles more. How many marbles does Lakshmi have now?
  11. 11.19 + 1 =
  12. 12.13 + 6 =
  13. 13.17 + 3 =
  14. 14.6 + 8 + 3 =
  15. 15.2 + 5 + 13 =
  16. 16.There are 2 white flowers and 16 green flowers. How many flowers are there in all?
  17. 17.Sneha has 14 kites and gets 3 kites more. How many kites does Sneha have now?
  18. 18.Gurpreet has 3 marbles and gets 13 marbles more. How many marbles does Gurpreet have now?
  19. 19.5 + 5 =
  20. 20.7 + 9 =
  21. 21.Riya has 11 pencils and gets 6 pencils more. How many pencils does Riya have now?
  22. 22.1 + ? = 8
  23. 23.3 + ? = 8
  24. 24.3 + ? = 16
  25. 25.3 + 1 + 9 =
  26. 26.9 + 2 =
  27. 27.1 + 4 + 13 =
  28. 28.5 + 2 + 11 =
  29. 29.2 + 1 + 16 =
  30. 30.4 + ? = 8
  31. 31.7 + 2 =
  32. 32.18 + 1 =
  33. 33.Nisha has 3 marbles and gets 8 marbles more. How many marbles does Nisha have now?
  34. 34.3 + 3 + 2 =
  35. 35.? + 7 = 14
  36. 36.14 + 2 =
  37. 37.8 + 12 =
  38. 38.10 + 3 =
  39. 39.16 + 1 =
  40. 40.4 + 2 + 14 =

Answer key

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

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