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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 354 · 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. 1.16 + 4 =
  2. 2.3 + 3 + 2 =
  3. 3.There are 4 green kites and 3 pink kites. How many kites are there in all?
  4. 4.Farhan has 15 crayons and gets 4 crayons more. How many crayons does Farhan have now?
  5. 5.? + 3 = 5
  6. 6.There are 9 pink balls and 5 green balls. How many balls are there in all?
  7. 7.3 + 2 + 9 =
  8. 8.There are 6 yellow beads and 10 red beads. How many beads are there in all?
  9. 9.1 + 4 + 10 =
  10. 10.1 + 3 + 15 =
  11. 11.2 + 6 + 12 =
  12. 12.? + 6 = 12
  13. 13.There are 11 pink beads and 4 red beads. How many beads are there in all?
  14. 14.There are 9 yellow beads and 9 red beads. How many beads are there in all?
  15. 15.17 + 2 =
  16. 16.There are 9 green flowers and 2 yellow flowers. How many flowers are there in all?
  17. 17.Gurpreet has 6 laddoos and gets 13 laddoos more. How many laddoos does Gurpreet have now?
  18. 18.There are 9 yellow beads and 5 pink beads. How many beads are there in all?
  19. 19.2 + 8 + 5 =
  20. 20.3 + 4 =
  21. 21.16 + 3 =
  22. 22.13 + 4 =
  23. 23.? + 9 = 12
  24. 24.6 + 1 + 8 =
  25. 25.? + 1 = 6
  26. 26.3 + 4 + 4 =
  27. 27.3 + ? = 12
  28. 28.There are 9 green balls and 10 red balls. How many balls are there in all?
  29. 29.Dev has 13 marbles and gets 1 marble more. How many marbles does Dev have now?
  30. 30.Zoya has 15 balls and gets 4 balls more. How many balls does Zoya have now?
  31. 31.? + 7 = 9
  32. 32.? + 7 = 14
  33. 33.Isha has 2 bananas and gets 15 bananas more. How many bananas does Isha have now?
  34. 34.5 + 7 =
  35. 35.There are 7 blue crayons and 7 yellow crayons. How many crayons are there in all?
  36. 36.There are 2 pink kites and 17 yellow kites. How many kites are there in all?
  37. 37.19 + 1 =
  38. 38.9 + 4 =
  39. 39.Aarav has 6 balloons and gets 4 balloons more. How many balloons does Aarav have now?
  40. 40.1 + 8 =

Answer key

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

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