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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 66 · 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. 1.4 + 1 + 12 =
  2. 2.5 + 3 =
  3. 3.1 + 4 + 10 =
  4. 4.Karan has 2 kites and gets 8 kites more. How many kites does Karan have now?
  5. 5.7 + 7 =
  6. 6.There are 5 yellow flowers and 10 pink flowers. How many flowers are there in all?
  7. 7.5 + ? = 8
  8. 8.17 + 2 =
  9. 9.? + 2 = 19
  10. 10.There are 2 yellow beads and 11 green beads. How many beads are there in all?
  11. 11.Aditya has 15 mangoes and gets 2 mangoes more. How many mangoes does Aditya have now?
  12. 12.There are 10 yellow crayons and 4 pink crayons. How many crayons are there in all?
  13. 13.There are 6 green crayons and 7 blue crayons. How many crayons are there in all?
  14. 14.8 + 10 =
  15. 15.Joseph has 2 books and gets 1 book more. How many books does Joseph have now?
  16. 16.8 + 6 + 2 =
  17. 17.2 + 7 + 4 =
  18. 18.5 + 3 + 11 =
  19. 19.5 + 8 + 4 =
  20. 20.There are 5 white balls and 11 blue balls. How many balls are there in all?
  21. 21.1 + 8 + 8 =
  22. 22.? + 4 = 7
  23. 23.3 + 1 + 5 =
  24. 24.13 + 7 =
  25. 25.There are 4 white beads and 5 blue beads. How many beads are there in all?
  26. 26.8 + 2 + 1 =
  27. 27.? + 3 = 10
  28. 28.? + 1 = 4
  29. 29.8 + 6 =
  30. 30.2 + ? = 4
  31. 31.2 + 4 =
  32. 32.Vivaan has 5 balls and gets 1 ball more. How many balls does Vivaan have now?
  33. 33.There are 6 blue kites and 7 yellow kites. How many kites are there in all?
  34. 34.10 + 10 =
  35. 35.Lakshmi has 9 bananas and gets 9 bananas more. How many bananas does Lakshmi have now?
  36. 36.? + 4 = 13
  37. 37.There are 7 pink beads and 10 green beads. How many beads are there in all?
  38. 38.4 + 16 =
  39. 39.2 + 1 + 4 =
  40. 40.Rahul has 2 books and gets 14 books more. How many books does Rahul have now?

Answer key

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

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