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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 49 · 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 9 red balloons and 5 green balloons. How many balloons are there in all?
  2. 2.There are 11 pink balls and 2 yellow balls. How many balls are there in all?
  3. 3.There are 8 green balls and 2 blue balls. How many balls are there in all?
  4. 4.Joseph has 12 kites and gets 7 kites more. How many kites does Joseph have now?
  5. 5.2 + ? = 7
  6. 6.7 + 6 + 2 =
  7. 7.? + 1 = 6
  8. 8.Lakshmi has 5 pencils and gets 15 pencils more. How many pencils does Lakshmi have now?
  9. 9.There are 3 blue kites and 9 pink kites. How many kites are there in all?
  10. 10.2 + ? = 12
  11. 11.There are 11 green balls and 4 white balls. How many balls are there in all?
  12. 12.8 + 7 + 5 =
  13. 13.? + 5 = 6
  14. 14.8 + 5 + 1 =
  15. 15.There are 10 white balls and 9 green balls. How many balls are there in all?
  16. 16.There are 7 blue crayons and 12 white crayons. How many crayons are there in all?
  17. 17.18 + 2 =
  18. 18.3 + 5 + 12 =
  19. 19.1 + ? = 4
  20. 20.? + 1 = 15
  21. 21.Aarav has 9 bananas and gets 2 bananas more. How many bananas does Aarav have now?
  22. 22.? + 5 = 13
  23. 23.3 + ? = 14
  24. 24.? + 6 = 14
  25. 25.Joseph has 5 balls and gets 3 balls more. How many balls does Joseph have now?
  26. 26.There are 2 yellow beads and 4 green beads. How many beads are there in all?
  27. 27.? + 3 = 9
  28. 28.8 + 10 =
  29. 29.16 + 2 =
  30. 30.Diya has 15 balls and gets 4 balls more. How many balls does Diya have now?
  31. 31.Rohan has 2 balloons and gets 2 balloons more. How many balloons does Rohan have now?
  32. 32.? + 1 = 7
  33. 33.? + 7 = 8
  34. 34.6 + 4 + 4 =
  35. 35.Diya has 5 kites and gets 1 kite more. How many kites does Diya have now?
  36. 36.There are 9 white flowers and 7 yellow flowers. How many flowers are there in all?
  37. 37.There are 3 pink balls and 16 white balls. How many balls are there in all?
  38. 38.There are 6 red kites and 10 pink kites. How many kites are there in all?
  39. 39.5 + 6 + 6 =
  40. 40.11 + ? = 12

Answer key

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

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