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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 444 · 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 12 red crayons and 3 green crayons. How many crayons are there in all?
  2. 2.7 + 7 + 2 =
  3. 3.19 + 1 =
  4. 4.There are 4 green balloons and 2 blue balloons. How many balloons are there in all?
  5. 5.6 + 5 =
  6. 6.15 + ? = 18
  7. 7.There are 11 blue beads and 8 yellow beads. How many beads are there in all?
  8. 8.? + 1 = 3
  9. 9.6 + 4 =
  10. 10.6 + 7 + 7 =
  11. 11.Kavya has 14 mangoes and gets 5 mangoes more. How many mangoes does Kavya have now?
  12. 12.6 + ? = 14
  13. 13.Sneha has 15 flowers and gets 1 flower more. How many flowers does Sneha have now?
  14. 14.7 + 5 + 4 =
  15. 15.Meera has 6 kites and gets 11 kites more. How many kites does Meera have now?
  16. 16.7 + 4 + 3 =
  17. 17.1 + 15 =
  18. 18.4 + 1 + 8 =
  19. 19.There are 9 yellow crayons and 11 white crayons. How many crayons are there in all?
  20. 20.1 + 4 + 15 =
  21. 21.10 + 2 =
  22. 22.There are 12 red flowers and 7 green flowers. How many flowers are there in all?
  23. 23.17 + 1 =
  24. 24.There are 2 blue beads and 4 white beads. How many beads are there in all?
  25. 25.Meera has 10 kites and gets 9 kites more. How many kites does Meera have now?
  26. 26.Rohan has 9 balls and gets 5 balls more. How many balls does Rohan have now?
  27. 27.12 + 3 =
  28. 28.There are 9 red kites and 6 green kites. How many kites are there in all?
  29. 29.There are 2 white beads and 16 yellow beads. How many beads are there in all?
  30. 30.5 + 9 =
  31. 31.There are 11 pink balls and 8 blue balls. How many balls are there in all?
  32. 32.10 + 6 =
  33. 33.Sneha has 15 flowers and gets 4 flowers more. How many flowers does Sneha have now?
  34. 34.There are 8 yellow balloons and 3 pink balloons. How many balloons are there in all?
  35. 35.7 + 12 =
  36. 36.There are 12 blue crayons and 7 yellow crayons. How many crayons are there in all?
  37. 37.3 + ? = 4
  38. 38.1 + ? = 3
  39. 39.5 + 1 =
  40. 40.? + 13 = 16

Answer key

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

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