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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 590 · 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. 1.11 + 3 =
  2. 2.Ananya has 2 marbles and gets 4 marbles more. How many marbles does Ananya have now?
  3. 3.? + 4 = 5
  4. 4.There are 7 white crayons and 7 green crayons. How many crayons are there in all?
  5. 5.12 + 8 =
  6. 6.7 + 8 =
  7. 7.2 + 3 + 6 =
  8. 8.4 + 11 =
  9. 9.3 + 4 + 10 =
  10. 10.There are 4 yellow balls and 2 blue balls. How many balls are there in all?
  11. 11.4 + 7 =
  12. 12.1 + ? = 15
  13. 13.4 + 6 + 10 =
  14. 14.? + 8 = 14
  15. 15.7 + 3 + 1 =
  16. 16.6 + 1 + 6 =
  17. 17.? + 7 = 9
  18. 18.? + 8 = 17
  19. 19.There are 6 white balloons and 14 green balloons. How many balloons are there in all?
  20. 20.3 + ? = 4
  21. 21.There are 11 green crayons and 3 blue crayons. How many crayons are there in all?
  22. 22.7 + 6 + 7 =
  23. 23.4 + 5 + 9 =
  24. 24.9 + 9 =
  25. 25.5 + 1 + 4 =
  26. 26.4 + ? = 5
  27. 27.Meera has 15 crayons and gets 4 crayons more. How many crayons does Meera have now?
  28. 28.11 + 5 =
  29. 29.6 + ? = 16
  30. 30.? + 8 = 12
  31. 31.2 + 6 + 6 =
  32. 32.Priya has 4 bananas and gets 2 bananas more. How many bananas does Priya have now?
  33. 33.There are 10 white beads and 5 red beads. How many beads are there in all?
  34. 34.4 + 4 + 10 =
  35. 35.Dev has 2 balloons and gets 10 balloons more. How many balloons does Dev have now?
  36. 36.There are 8 red beads and 4 blue beads. How many beads are there in all?
  37. 37.5 + 5 + 10 =
  38. 38.There are 7 blue kites and 3 pink kites. How many kites are there in all?
  39. 39.1 + ? = 3
  40. 40.7 + 2 + 4 =

Answer key

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

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