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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 356 · 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.There are 8 white crayons and 11 red crayons. How many crayons are there in all?
  2. 2.Aditya has 15 crayons and gets 4 crayons more. How many crayons does Aditya have now?
  3. 3.There are 12 yellow crayons and 4 pink crayons. How many crayons are there in all?
  4. 4.Gurpreet has 7 kites and gets 1 kite more. How many kites does Gurpreet have now?
  5. 5.? + 2 = 6
  6. 6.1 + 8 + 5 =
  7. 7.5 + 2 =
  8. 8.2 + 5 =
  9. 9.7 + 2 + 2 =
  10. 10.There are 8 yellow balloons and 8 blue balloons. How many balloons are there in all?
  11. 11.18 + 1 =
  12. 12.6 + 2 + 4 =
  13. 13.? + 5 = 13
  14. 14.13 + 2 =
  15. 15.6 + ? = 14
  16. 16.There are 5 yellow flowers and 10 white flowers. How many flowers are there in all?
  17. 17.7 + 2 =
  18. 18.16 + 2 =
  19. 19.5 + ? = 13
  20. 20.6 + 6 + 6 =
  21. 21.There are 10 yellow flowers and 8 red flowers. How many flowers are there in all?
  22. 22.3 + 3 + 8 =
  23. 23.There are 5 red crayons and 13 green crayons. How many crayons are there in all?
  24. 24.14 + 5 =
  25. 25.2 + 6 =
  26. 26.9 + ? = 11
  27. 27.19 + 1 =
  28. 28.Kabir has 11 shells and gets 2 shells more. How many shells does Kabir have now?
  29. 29.There are 5 white flowers and 3 pink flowers. How many flowers are there in all?
  30. 30.13 + ? = 17
  31. 31.6 + 7 + 3 =
  32. 32.7 + ? = 8
  33. 33.There are 8 yellow flowers and 4 blue flowers. How many flowers are there in all?
  34. 34.? + 4 = 5
  35. 35.6 + 4 + 3 =
  36. 36.There are 4 yellow balloons and 11 blue balloons. How many balloons are there in all?
  37. 37.7 + 3 + 1 =
  38. 38.There are 12 white balls and 2 green balls. How many balls are there in all?
  39. 39.Isha has 5 pencils and gets 13 pencils more. How many pencils does Isha have now?
  40. 40.5 + ? = 14

Answer key

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

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