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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 459 · 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 + 6 + 9 =
  2. 2.Manav has 2 kites and gets 18 kites more. How many kites does Manav have now?
  3. 3.Meera has 10 laddoos and gets 1 laddoo more. How many laddoos does Meera have now?
  4. 4.2 + 7 + 10 =
  5. 5.Vivaan has 14 mangoes and gets 1 mango more. How many mangoes does Vivaan have now?
  6. 6.1 + 8 + 7 =
  7. 7.2 + 8 + 7 =
  8. 8.15 + 1 =
  9. 9.? + 4 = 13
  10. 10.12 + 5 =
  11. 11.Nisha has 2 crayons and gets 18 crayons more. How many crayons does Nisha have now?
  12. 12.There are 6 blue crayons and 8 red crayons. How many crayons are there in all?
  13. 13.There are 6 white balloons and 6 red balloons. How many balloons are there in all?
  14. 14.There are 6 red balls and 14 yellow balls. How many balls are there in all?
  15. 15.3 + 4 + 1 =
  16. 16.11 + 3 =
  17. 17.There are 5 white flowers and 9 blue flowers. How many flowers are there in all?
  18. 18.Nisha has 8 crayons and gets 3 crayons more. How many crayons does Nisha have now?
  19. 19.18 + 2 =
  20. 20.There are 9 red balls and 9 green balls. How many balls are there in all?
  21. 21.1 + 5 =
  22. 22.11 + 9 =
  23. 23.6 + 7 =
  24. 24.13 + 3 =
  25. 25.There are 11 pink balloons and 3 red balloons. How many balloons are there in all?
  26. 26.7 + ? = 13
  27. 27.16 + 1 =
  28. 28.13 + 5 =
  29. 29.4 + 2 =
  30. 30.Priya has 3 pencils and gets 13 pencils more. How many pencils does Priya have now?
  31. 31.There are 11 blue flowers and 7 white flowers. How many flowers are there in all?
  32. 32.Diya has 3 crayons and gets 3 crayons more. How many crayons does Diya have now?
  33. 33.There are 6 white beads and 11 yellow beads. How many beads are there in all?
  34. 34.Meera has 7 crayons and gets 1 crayon more. How many crayons does Meera have now?
  35. 35.There are 7 white flowers and 10 red flowers. How many flowers are there in all?
  36. 36.There are 6 white balls and 11 green balls. How many balls are there in all?
  37. 37.14 + 1 =
  38. 38.Aarav has 13 crayons and gets 6 crayons more. How many crayons does Aarav have now?
  39. 39.19 + 1 =
  40. 40.1 + 5 + 9 =

Answer key

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

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