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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 508 · 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.Riya has 13 mangoes and gets 2 mangoes more. How many mangoes does Riya have now?
  2. 2.There are 9 red beads and 11 white beads. How many beads are there in all?
  3. 3.There are 4 red balloons and 12 blue balloons. How many balloons are there in all?
  4. 4.6 + ? = 10
  5. 5.8 + 12 =
  6. 6.? + 5 = 6
  7. 7.There are 6 yellow balloons and 13 white balloons. How many balloons are there in all?
  8. 8.4 + ? = 6
  9. 9.There are 4 blue flowers and 6 green flowers. How many flowers are there in all?
  10. 10.2 + 6 + 12 =
  11. 11.10 + 3 =
  12. 12.Gurpreet has 13 pencils and gets 5 pencils more. How many pencils does Gurpreet have now?
  13. 13.There are 7 red kites and 13 pink kites. How many kites are there in all?
  14. 14.16 + 2 =
  15. 15.There are 5 yellow crayons and 7 green crayons. How many crayons are there in all?
  16. 16.Rohan has 2 mangoes and gets 15 mangoes more. How many mangoes does Rohan have now?
  17. 17.8 + 6 + 5 =
  18. 18.There are 11 green kites and 4 blue kites. How many kites are there in all?
  19. 19.Gurpreet has 8 pencils and gets 2 pencils more. How many pencils does Gurpreet have now?
  20. 20.13 + 4 =
  21. 21.Dev has 7 kites and gets 5 kites more. How many kites does Dev have now?
  22. 22.There are 2 red balloons and 2 blue balloons. How many balloons are there in all?
  23. 23.There are 11 yellow kites and 4 white kites. How many kites are there in all?
  24. 24.1 + ? = 3
  25. 25.There are 12 yellow beads and 3 red beads. How many beads are there in all?
  26. 26.There are 5 red crayons and 15 blue crayons. How many crayons are there in all?
  27. 27.Saanvi has 10 crayons and gets 10 crayons more. How many crayons does Saanvi have now?
  28. 28.There are 7 white kites and 4 yellow kites. How many kites are there in all?
  29. 29.2 + 4 + 7 =
  30. 30.3 + 4 + 2 =
  31. 31.1 + ? = 14
  32. 32.3 + 7 =
  33. 33.? + 15 = 17
  34. 34.1 + 6 + 9 =
  35. 35.? + 2 = 9
  36. 36.2 + 3 + 3 =
  37. 37.4 + ? = 13
  38. 38.4 + 3 + 11 =
  39. 39.There are 3 blue beads and 9 yellow beads. How many beads are there in all?
  40. 40.Aarav has 12 laddoos and gets 2 laddoos more. How many laddoos does Aarav have now?

Answer key

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

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