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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 115 · 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.? + 18 = 19
  2. 2.There are 4 blue kites and 10 red kites. How many kites are there in all?
  3. 3.? + 16 = 20
  4. 4.Priya has 3 flowers and gets 1 flower more. How many flowers does Priya have now?
  5. 5.1 + 4 + 14 =
  6. 6.There are 11 white balloons and 9 blue balloons. How many balloons are there in all?
  7. 7.5 + 2 + 13 =
  8. 8.19 + 1 =
  9. 9.There are 9 yellow balloons and 2 pink balloons. How many balloons are there in all?
  10. 10.Priya has 10 kites and gets 8 kites more. How many kites does Priya have now?
  11. 11.Nisha has 14 pencils and gets 1 pencil more. How many pencils does Nisha have now?
  12. 12.6 + 6 =
  13. 13.Gurpreet has 3 crayons and gets 10 crayons more. How many crayons does Gurpreet have now?
  14. 14.7 + 1 + 2 =
  15. 15.Kabir has 7 laddoos and gets 10 laddoos more. How many laddoos does Kabir have now?
  16. 16.3 + 9 =
  17. 17.9 + 3 =
  18. 18.There are 6 blue beads and 14 yellow beads. How many beads are there in all?
  19. 19.There are 12 green beads and 5 blue beads. How many beads are there in all?
  20. 20.3 + 8 + 5 =
  21. 21.? + 1 = 12
  22. 22.Ananya has 2 balloons and gets 9 balloons more. How many balloons does Ananya have now?
  23. 23.6 + 13 =
  24. 24.There are 9 red kites and 4 blue kites. How many kites are there in all?
  25. 25.2 + 2 + 4 =
  26. 26.Riya has 11 bananas and gets 1 banana more. How many bananas does Riya have now?
  27. 27.13 + 5 =
  28. 28.Gurpreet has 3 kites and gets 3 kites more. How many kites does Gurpreet have now?
  29. 29.There are 4 green kites and 6 blue kites. How many kites are there in all?
  30. 30.Aarav has 4 marbles and gets 11 marbles more. How many marbles does Aarav have now?
  31. 31.16 + 3 =
  32. 32.4 + 1 =
  33. 33.? + 3 = 4
  34. 34.5 + ? = 8
  35. 35.2 + 8 + 8 =
  36. 36.3 + 4 =
  37. 37.11 + 2 =
  38. 38.11 + 3 =
  39. 39.2 + 6 + 8 =
  40. 40.4 + ? = 15

Answer key

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

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