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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 604 · 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. 1.1 + 1 + 13 =
  2. 2.There are 12 yellow crayons and 4 red crayons. How many crayons are there in all?
  3. 3.4 + ? = 9
  4. 4.There are 3 blue beads and 8 yellow beads. How many beads are there in all?
  5. 5.8 + 8 =
  6. 6.? + 11 = 12
  7. 7.8 + 5 + 5 =
  8. 8.5 + 14 =
  9. 9.3 + 8 + 5 =
  10. 10.There are 2 red balls and 6 pink balls. How many balls are there in all?
  11. 11.There are 11 pink balls and 3 green balls. How many balls are there in all?
  12. 12.Rahul has 3 balloons and gets 17 balloons more. How many balloons does Rahul have now?
  13. 13.12 + ? = 15
  14. 14.Kabir has 15 mangoes and gets 2 mangoes more. How many mangoes does Kabir have now?
  15. 15.There are 4 yellow flowers and 11 red flowers. How many flowers are there in all?
  16. 16.Meera has 2 mangoes and gets 11 mangoes more. How many mangoes does Meera have now?
  17. 17.3 + ? = 8
  18. 18.Priya has 6 marbles and gets 12 marbles more. How many marbles does Priya have now?
  19. 19.Vivaan has 9 kites and gets 6 kites more. How many kites does Vivaan have now?
  20. 20.? + 11 = 18
  21. 21.Sneha has 9 balls and gets 1 ball more. How many balls does Sneha have now?
  22. 22.1 + 3 + 8 =
  23. 23.There are 4 pink balloons and 14 green balloons. How many balloons are there in all?
  24. 24.5 + 2 =
  25. 25.4 + 8 =
  26. 26.? + 8 = 18
  27. 27.Aarav has 6 laddoos and gets 6 laddoos more. How many laddoos does Aarav have now?
  28. 28.3 + ? = 9
  29. 29.8 + 1 + 11 =
  30. 30.8 + 2 + 7 =
  31. 31.7 + 5 + 6 =
  32. 32.Rahul has 15 crayons and gets 4 crayons more. How many crayons does Rahul have now?
  33. 33.6 + 8 + 6 =
  34. 34.12 + 8 =
  35. 35.3 + 7 + 5 =
  36. 36.7 + ? = 10
  37. 37.Pooja has 14 laddoos and gets 1 laddoo more. How many laddoos does Pooja have now?
  38. 38.1 + 1 + 4 =
  39. 39.There are 8 pink crayons and 5 red crayons. How many crayons are there in all?
  40. 40.18 + 2 =

Answer key

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

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