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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 932 · 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. 1.6 + 2 + 5 =
  2. 2.Diya has 12 balloons and gets 2 balloons more. How many balloons does Diya have now?
  3. 3.? + 4 = 10
  4. 4.5 + 15 =
  5. 5.1 + 1 + 12 =
  6. 6.3 + 10 =
  7. 7.6 + 3 + 1 =
  8. 8.9 + 11 =
  9. 9.Vivaan has 4 flowers and gets 4 flowers more. How many flowers does Vivaan have now?
  10. 10.4 + 3 + 2 =
  11. 11.2 + ? = 5
  12. 12.10 + 8 =
  13. 13.Kabir has 14 pencils and gets 5 pencils more. How many pencils does Kabir have now?
  14. 14.3 + 3 + 2 =
  15. 15.3 + 5 =
  16. 16.? + 6 = 20
  17. 17.8 + 8 + 1 =
  18. 18.There are 6 red balloons and 8 yellow balloons. How many balloons are there in all?
  19. 19.5 + ? = 6
  20. 20.3 + 4 + 9 =
  21. 21.There are 7 red crayons and 2 green crayons. How many crayons are there in all?
  22. 22.Aditya has 15 laddoos and gets 4 laddoos more. How many laddoos does Aditya have now?
  23. 23.4 + ? = 16
  24. 24.? + 2 = 5
  25. 25.Manav has 12 marbles and gets 1 marble more. How many marbles does Manav have now?
  26. 26.There are 3 pink balls and 13 blue balls. How many balls are there in all?
  27. 27.? + 12 = 17
  28. 28.? + 6 = 13
  29. 29.2 + ? = 6
  30. 30.There are 5 white beads and 4 green beads. How many beads are there in all?
  31. 31.There are 7 white kites and 8 pink kites. How many kites are there in all?
  32. 32.10 + ? = 12
  33. 33.1 + ? = 5
  34. 34.1 + 1 + 16 =
  35. 35.There are 8 pink beads and 4 blue beads. How many beads are there in all?
  36. 36.Kabir has 9 balls and gets 10 balls more. How many balls does Kabir have now?
  37. 37.7 + 3 + 1 =
  38. 38.There are 4 blue kites and 7 pink kites. How many kites are there in all?
  39. 39.5 + 8 + 1 =
  40. 40.2 + 3 =

Answer key

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

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