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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 216 · 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 red kites and 8 green kites. How many kites are there in all?
  2. 2.8 + 6 + 3 =
  3. 3.10 + 8 =
  4. 4.10 + 7 =
  5. 5.6 + ? = 16
  6. 6.7 + 3 + 1 =
  7. 7.3 + 1 + 4 =
  8. 8.6 + 3 + 11 =
  9. 9.8 + 4 =
  10. 10.3 + 2 + 3 =
  11. 11.Kavya has 3 laddoos and gets 6 laddoos more. How many laddoos does Kavya have now?
  12. 12.4 + 7 + 5 =
  13. 13.There are 10 blue flowers and 2 green flowers. How many flowers are there in all?
  14. 14.There are 7 red balloons and 5 green balloons. How many balloons are there in all?
  15. 15.11 + 5 =
  16. 16.? + 19 = 20
  17. 17.1 + 8 + 9 =
  18. 18.Vivaan has 8 flowers and gets 3 flowers more. How many flowers does Vivaan have now?
  19. 19.7 + 4 =
  20. 20.1 + ? = 19
  21. 21.Vivaan has 6 flowers and gets 14 flowers more. How many flowers does Vivaan have now?
  22. 22.16 + 2 =
  23. 23.Nisha has 6 balls and gets 14 balls more. How many balls does Nisha have now?
  24. 24.7 + 5 + 7 =
  25. 25.There are 3 green kites and 7 yellow kites. How many kites are there in all?
  26. 26.5 + ? = 14
  27. 27.There are 6 white kites and 3 green kites. How many kites are there in all?
  28. 28.7 + ? = 8
  29. 29.2 + 8 + 9 =
  30. 30.Ananya has 8 mangoes and gets 4 mangoes more. How many mangoes does Ananya have now?
  31. 31.13 + 1 =
  32. 32.? + 1 = 5
  33. 33.3 + 2 =
  34. 34.? + 6 = 20
  35. 35.14 + 1 =
  36. 36.8 + 7 + 1 =
  37. 37.19 + 1 =
  38. 38.There are 4 green balloons and 4 yellow balloons. How many balloons are there in all?
  39. 39.5 + 8 + 3 =
  40. 40.? + 6 = 13

Answer key

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

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