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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 238 · 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 = 16
  2. 2.There are 11 blue balloons and 6 white balloons. How many balloons are there in all?
  3. 3.There are 3 pink balloons and 11 white balloons. How many balloons are there in all?
  4. 4.3 + 1 + 7 =
  5. 5.4 + ? = 11
  6. 6.9 + ? = 15
  7. 7.4 + 5 + 11 =
  8. 8.7 + 3 + 10 =
  9. 9.2 + 2 + 12 =
  10. 10.There are 2 yellow balls and 7 blue balls. How many balls are there in all?
  11. 11.1 + 1 + 10 =
  12. 12.There are 12 yellow balloons and 5 white balloons. How many balloons are there in all?
  13. 13.Gurpreet has 5 balloons and gets 14 balloons more. How many balloons does Gurpreet have now?
  14. 14.Saanvi has 11 mangoes and gets 3 mangoes more. How many mangoes does Saanvi have now?
  15. 15.There are 11 pink beads and 8 red beads. How many beads are there in all?
  16. 16.19 + 1 =
  17. 17.There are 3 red flowers and 10 pink flowers. How many flowers are there in all?
  18. 18.17 + 1 =
  19. 19.8 + 1 + 9 =
  20. 20.Diya has 5 books and gets 7 books more. How many books does Diya have now?
  21. 21.15 + ? = 17
  22. 22.There are 9 red kites and 11 yellow kites. How many kites are there in all?
  23. 23.? + 8 = 20
  24. 24.Priya has 14 marbles and gets 3 marbles more. How many marbles does Priya have now?
  25. 25.11 + 8 =
  26. 26.Zoya has 11 laddoos and gets 7 laddoos more. How many laddoos does Zoya have now?
  27. 27.3 + 11 =
  28. 28.4 + 3 + 8 =
  29. 29.8 + 8 + 2 =
  30. 30.Dev has 3 balls and gets 13 balls more. How many balls does Dev have now?
  31. 31.5 + 3 =
  32. 32.There are 6 red crayons and 7 green crayons. How many crayons are there in all?
  33. 33.5 + ? = 14
  34. 34.4 + 2 + 13 =
  35. 35.Kabir has 9 crayons and gets 11 crayons more. How many crayons does Kabir have now?
  36. 36.13 + 5 =
  37. 37.7 + 4 + 9 =
  38. 38.3 + 8 + 8 =
  39. 39.1 + 1 + 14 =
  40. 40.There are 4 white beads and 16 green beads. How many beads are there in all?

Answer key

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

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