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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 686 · 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 2 white balloons and 18 pink balloons. How many balloons are there in all?
  2. 2.7 + 3 + 1 =
  3. 3.7 + 6 + 2 =
  4. 4.There are 8 pink beads and 7 blue beads. How many beads are there in all?
  5. 5.There are 7 white balloons and 13 yellow balloons. How many balloons are there in all?
  6. 6.Vivaan has 7 laddoos and gets 12 laddoos more. How many laddoos does Vivaan have now?
  7. 7.? + 9 = 13
  8. 8.? + 5 = 16
  9. 9.? + 1 = 11
  10. 10.1 + 8 =
  11. 11.6 + ? = 11
  12. 12.3 + 1 =
  13. 13.4 + 9 =
  14. 14.2 + ? = 6
  15. 15.10 + 2 =
  16. 16.There are 9 blue balloons and 11 red balloons. How many balloons are there in all?
  17. 17.? + 5 = 9
  18. 18.? + 3 = 12
  19. 19.4 + ? = 13
  20. 20.Diya has 9 pencils and gets 4 pencils more. How many pencils does Diya have now?
  21. 21.1 + 9 =
  22. 22.There are 4 blue flowers and 3 red flowers. How many flowers are there in all?
  23. 23.1 + 2 + 16 =
  24. 24.There are 2 yellow balloons and 16 white balloons. How many balloons are there in all?
  25. 25.7 + ? = 14
  26. 26.Zoya has 13 balloons and gets 5 balloons more. How many balloons does Zoya have now?
  27. 27.10 + 5 =
  28. 28.3 + 5 =
  29. 29.Aarav has 8 laddoos and gets 3 laddoos more. How many laddoos does Aarav have now?
  30. 30.4 + 10 =
  31. 31.3 + 2 + 14 =
  32. 32.19 + 1 =
  33. 33.17 + 2 =
  34. 34.Aarav has 12 bananas and gets 4 bananas more. How many bananas does Aarav have now?
  35. 35.Pooja has 8 flowers and gets 12 flowers more. How many flowers does Pooja have now?
  36. 36.? + 5 = 12
  37. 37.7 + 1 =
  38. 38.There are 2 pink kites and 16 red kites. How many kites are there in all?
  39. 39.2 + ? = 9
  40. 40.7 + 5 + 1 =

Answer key

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

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