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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 703 · 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. 1.5 + 8 + 7 =
  2. 2.? + 5 = 10
  3. 3.18 + 2 =
  4. 4.Vivaan has 10 mangoes and gets 6 mangoes more. How many mangoes does Vivaan have now?
  5. 5.There are 7 green balls and 5 red balls. How many balls are there in all?
  6. 6.Lakshmi has 4 pencils and gets 13 pencils more. How many pencils does Lakshmi have now?
  7. 7.8 + 3 + 6 =
  8. 8.17 + 2 =
  9. 9.1 + 7 + 7 =
  10. 10.10 + ? = 11
  11. 11.There are 9 yellow crayons and 5 pink crayons. How many crayons are there in all?
  12. 12.1 + ? = 17
  13. 13.There are 6 pink balls and 10 red balls. How many balls are there in all?
  14. 14.? + 4 = 17
  15. 15.6 + 7 + 4 =
  16. 16.5 + 4 + 3 =
  17. 17.16 + 1 =
  18. 18.There are 2 green crayons and 17 red crayons. How many crayons are there in all?
  19. 19.There are 7 red crayons and 7 white crayons. How many crayons are there in all?
  20. 20.3 + 7 + 2 =
  21. 21.1 + ? = 13
  22. 22.Kabir has 13 laddoos and gets 5 laddoos more. How many laddoos does Kabir have now?
  23. 23.7 + 1 + 9 =
  24. 24.There are 10 pink kites and 5 blue kites. How many kites are there in all?
  25. 25.6 + 11 =
  26. 26.1 + 3 + 8 =
  27. 27.There are 3 white flowers and 9 blue flowers. How many flowers are there in all?
  28. 28.There are 10 pink flowers and 10 white flowers. How many flowers are there in all?
  29. 29.12 + 6 =
  30. 30.5 + 15 =
  31. 31.19 + 1 =
  32. 32.9 + 9 =
  33. 33.5 + 9 =
  34. 34.Diya has 6 bananas and gets 2 bananas more. How many bananas does Diya have now?
  35. 35.Dev has 2 shells and gets 6 shells more. How many shells does Dev have now?
  36. 36.? + 5 = 19
  37. 37.1 + 8 + 8 =
  38. 38.There are 4 pink kites and 15 green kites. How many kites are there in all?
  39. 39.There are 11 blue flowers and 7 pink flowers. How many flowers are there in all?
  40. 40.6 + 3 + 10 =

Answer key

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

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