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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 795 · 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 + 2 =
  2. 2.6 + 7 =
  3. 3.2 + 8 + 4 =
  4. 4.13 + 3 =
  5. 5.Vivaan has 2 crayons and gets 17 crayons more. How many crayons does Vivaan have now?
  6. 6.There are 4 blue kites and 12 white kites. How many kites are there in all?
  7. 7.2 + 5 + 1 =
  8. 8.There are 3 blue flowers and 13 white flowers. How many flowers are there in all?
  9. 9.2 + ? = 15
  10. 10.There are 6 blue beads and 10 green beads. How many beads are there in all?
  11. 11.There are 12 red flowers and 2 blue flowers. How many flowers are there in all?
  12. 12.12 + 3 =
  13. 13.Lakshmi has 4 pencils and gets 5 pencils more. How many pencils does Lakshmi have now?
  14. 14.17 + 1 =
  15. 15.There are 5 white crayons and 3 yellow crayons. How many crayons are there in all?
  16. 16.7 + ? = 13
  17. 17.Karan has 5 shells and gets 7 shells more. How many shells does Karan have now?
  18. 18.There are 12 blue balls and 8 red balls. How many balls are there in all?
  19. 19.There are 7 blue beads and 2 pink beads. How many beads are there in all?
  20. 20.There are 4 yellow balloons and 7 white balloons. How many balloons are there in all?
  21. 21.There are 7 white balloons and 6 blue balloons. How many balloons are there in all?
  22. 22.There are 3 blue beads and 15 red beads. How many beads are there in all?
  23. 23.2 + ? = 17
  24. 24.? + 18 = 19
  25. 25.8 + 5 + 2 =
  26. 26.There are 9 pink beads and 5 green beads. How many beads are there in all?
  27. 27.2 + ? = 3
  28. 28.4 + 3 =
  29. 29.16 + 4 =
  30. 30.12 + 4 =
  31. 31.Kabir has 2 flowers and gets 3 flowers more. How many flowers does Kabir have now?
  32. 32.15 + 2 =
  33. 33.Aarav has 3 laddoos and gets 16 laddoos more. How many laddoos does Aarav have now?
  34. 34.Kavya has 7 marbles and gets 3 marbles more. How many marbles does Kavya have now?
  35. 35.There are 5 pink kites and 3 yellow kites. How many kites are there in all?
  36. 36.3 + 6 + 6 =
  37. 37.? + 2 = 13
  38. 38.2 + 13 =
  39. 39.Aarav has 2 shells and gets 5 shells more. How many shells does Aarav have now?
  40. 40.7 + 2 + 4 =

Answer key

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

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