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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 741 · 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. 1.3 + 1 + 9 =
  2. 2.19 + 1 =
  3. 3.6 + 3 + 2 =
  4. 4.Aditya has 2 balloons and gets 3 balloons more. How many balloons does Aditya have now?
  5. 5.1 + 4 =
  6. 6.There are 4 blue balls and 12 yellow balls. How many balls are there in all?
  7. 7.14 + 4 =
  8. 8.1 + 3 + 3 =
  9. 9.2 + 8 =
  10. 10.Zoya has 11 mangoes and gets 2 mangoes more. How many mangoes does Zoya have now?
  11. 11.? + 1 = 4
  12. 12.There are 7 green beads and 6 white beads. How many beads are there in all?
  13. 13.15 + 4 =
  14. 14.3 + 5 + 3 =
  15. 15.There are 12 white beads and 8 yellow beads. How many beads are there in all?
  16. 16.2 + 9 =
  17. 17.1 + 17 =
  18. 18.3 + 5 =
  19. 19.Dev has 5 laddoos and gets 9 laddoos more. How many laddoos does Dev have now?
  20. 20.4 + 3 =
  21. 21.There are 8 pink flowers and 9 red flowers. How many flowers are there in all?
  22. 22.Joseph has 15 mangoes and gets 1 mango more. How many mangoes does Joseph have now?
  23. 23.There are 2 yellow balls and 5 blue balls. How many balls are there in all?
  24. 24.4 + 1 =
  25. 25.Meera has 15 laddoos and gets 2 laddoos more. How many laddoos does Meera have now?
  26. 26.? + 2 = 6
  27. 27.2 + ? = 6
  28. 28.There are 11 blue kites and 2 pink kites. How many kites are there in all?
  29. 29.8 + 1 + 3 =
  30. 30.? + 2 = 9
  31. 31.12 + 1 =
  32. 32.13 + ? = 14
  33. 33.18 + 1 =
  34. 34.There are 2 red kites and 11 white kites. How many kites are there in all?
  35. 35.8 + 6 + 3 =
  36. 36.1 + 6 + 9 =
  37. 37.11 + 2 =
  38. 38.Aditya has 14 kites and gets 2 kites more. How many kites does Aditya have now?
  39. 39.4 + 7 + 5 =
  40. 40.Ananya has 8 balls and gets 3 balls more. How many balls does Ananya have now?

Answer key

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

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