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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 989 · 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 + 10 =
  2. 2.17 + 1 =
  3. 3.? + 6 = 8
  4. 4.3 + 6 + 2 =
  5. 5.? + 9 = 10
  6. 6.There are 5 white flowers and 9 blue flowers. How many flowers are there in all?
  7. 7.There are 12 blue beads and 4 yellow beads. How many beads are there in all?
  8. 8.10 + 1 =
  9. 9.Meera has 15 mangoes and gets 1 mango more. How many mangoes does Meera have now?
  10. 10.3 + 8 + 2 =
  11. 11.2 + 8 + 6 =
  12. 12.1 + 7 =
  13. 13.5 + 3 + 5 =
  14. 14.Vivaan has 2 kites and gets 6 kites more. How many kites does Vivaan have now?
  15. 15.2 + 5 =
  16. 16.5 + 1 + 7 =
  17. 17.6 + 5 + 8 =
  18. 18.There are 3 yellow balloons and 9 red balloons. How many balloons are there in all?
  19. 19.There are 4 green kites and 16 yellow kites. How many kites are there in all?
  20. 20.9 + 6 =
  21. 21.There are 12 green flowers and 7 white flowers. How many flowers are there in all?
  22. 22.There are 7 pink flowers and 13 green flowers. How many flowers are there in all?
  23. 23.2 + 7 =
  24. 24.5 + 2 + 9 =
  25. 25.There are 11 yellow beads and 3 green beads. How many beads are there in all?
  26. 26.2 + 11 =
  27. 27.2 + 2 + 11 =
  28. 28.Priya has 10 bananas and gets 10 bananas more. How many bananas does Priya have now?
  29. 29.1 + 1 + 14 =
  30. 30.2 + 6 =
  31. 31.1 + 5 =
  32. 32.Priya has 3 mangoes and gets 1 mango more. How many mangoes does Priya have now?
  33. 33.12 + 1 =
  34. 34.2 + ? = 3
  35. 35.Aarav has 9 mangoes and gets 2 mangoes more. How many mangoes does Aarav have now?
  36. 36.There are 9 yellow flowers and 8 pink flowers. How many flowers are there in all?
  37. 37.8 + ? = 11
  38. 38.There are 5 green flowers and 4 blue flowers. How many flowers are there in all?
  39. 39.2 + 1 + 14 =
  40. 40.Ananya has 3 books and gets 11 books more. How many books does Ananya have now?

Answer key

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

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