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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 58 · 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 7 yellow beads and 4 green beads. How many beads are there in all?
  2. 2.18 + 2 =
  3. 3.There are 7 blue balloons and 13 red balloons. How many balloons are there in all?
  4. 4.There are 2 red balloons and 2 blue balloons. How many balloons are there in all?
  5. 5.5 + 1 + 1 =
  6. 6.? + 3 = 7
  7. 7.2 + 17 =
  8. 8.4 + ? = 16
  9. 9.There are 8 blue crayons and 9 yellow crayons. How many crayons are there in all?
  10. 10.8 + 2 + 10 =
  11. 11.17 + 2 =
  12. 12.Isha has 15 kites and gets 4 kites more. How many kites does Isha have now?
  13. 13.Vivaan has 7 mangoes and gets 4 mangoes more. How many mangoes does Vivaan have now?
  14. 14.There are 3 white balls and 8 blue balls. How many balls are there in all?
  15. 15.15 + 1 =
  16. 16.17 + 1 =
  17. 17.7 + 8 + 1 =
  18. 18.8 + 1 + 6 =
  19. 19.3 + 2 =
  20. 20.3 + ? = 14
  21. 21.5 + 8 =
  22. 22.There are 2 green balls and 10 white balls. How many balls are there in all?
  23. 23.2 + 1 + 14 =
  24. 24.? + 12 = 18
  25. 25.16 + ? = 20
  26. 26.Saanvi has 5 books and gets 10 books more. How many books does Saanvi have now?
  27. 27.2 + 18 =
  28. 28.4 + 12 =
  29. 29.? + 1 = 7
  30. 30.3 + 3 + 5 =
  31. 31.11 + 7 =
  32. 32.6 + 3 =
  33. 33.1 + 2 + 5 =
  34. 34.14 + ? = 16
  35. 35.Vivaan has 11 kites and gets 7 kites more. How many kites does Vivaan have now?
  36. 36.2 + 3 + 2 =
  37. 37.Zoya has 3 laddoos and gets 15 laddoos more. How many laddoos does Zoya have now?
  38. 38.8 + 1 + 1 =
  39. 39.4 + 7 + 8 =
  40. 40.There are 9 white balloons and 2 green balloons. How many balloons are there in all?

Answer key

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

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