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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 154 · 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 7 green flowers and 2 yellow flowers. How many flowers are there in all?
  2. 2.? + 2 = 4
  3. 3.There are 9 white beads and 7 green beads. How many beads are there in all?
  4. 4.8 + 8 + 2 =
  5. 5.3 + 1 =
  6. 6.1 + 5 + 12 =
  7. 7.? + 4 = 11
  8. 8.? + 1 = 9
  9. 9.6 + 6 + 5 =
  10. 10.There are 9 yellow kites and 10 white kites. How many kites are there in all?
  11. 11.5 + 1 =
  12. 12.2 + 7 + 8 =
  13. 13.17 + 1 =
  14. 14.? + 8 = 17
  15. 15.? + 1 = 6
  16. 16.8 + 8 + 3 =
  17. 17.There are 4 red kites and 2 white kites. How many kites are there in all?
  18. 18.Nisha has 3 flowers and gets 3 flowers more. How many flowers does Nisha have now?
  19. 19.13 + 7 =
  20. 20.6 + 4 + 7 =
  21. 21.? + 6 = 8
  22. 22.3 + 5 + 9 =
  23. 23.2 + 3 + 10 =
  24. 24.There are 9 blue balls and 3 yellow balls. How many balls are there in all?
  25. 25.Meera has 6 bananas and gets 1 banana more. How many bananas does Meera have now?
  26. 26.2 + 2 + 1 =
  27. 27.There are 8 yellow flowers and 4 red flowers. How many flowers are there in all?
  28. 28.10 + 9 =
  29. 29.There are 10 red balls and 2 white balls. How many balls are there in all?
  30. 30.1 + 1 + 17 =
  31. 31.19 + 1 =
  32. 32.There are 5 pink balls and 11 blue balls. How many balls are there in all?
  33. 33.There are 5 green crayons and 12 white crayons. How many crayons are there in all?
  34. 34.There are 9 blue kites and 10 yellow kites. How many kites are there in all?
  35. 35.6 + 5 + 8 =
  36. 36.Rahul has 6 flowers and gets 8 flowers more. How many flowers does Rahul have now?
  37. 37.3 + ? = 6
  38. 38.? + 4 = 8
  39. 39.Zoya has 13 marbles and gets 7 marbles more. How many marbles does Zoya have now?
  40. 40.There are 3 white balloons and 13 blue balloons. How many balloons are there in all?

Answer key

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

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