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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 108 · 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.Vivaan has 15 balls and gets 5 balls more. How many balls does Vivaan have now?
  2. 2.5 + 5 + 4 =
  3. 3.Rahul has 12 kites and gets 2 kites more. How many kites does Rahul have now?
  4. 4.3 + ? = 20
  5. 5.15 + 2 =
  6. 6.4 + 6 =
  7. 7.Zoya has 7 mangoes and gets 11 mangoes more. How many mangoes does Zoya have now?
  8. 8.2 + 4 =
  9. 9.There are 3 red balls and 5 pink balls. How many balls are there in all?
  10. 10.There are 8 blue flowers and 5 green flowers. How many flowers are there in all?
  11. 11.5 + 13 =
  12. 12.There are 10 red crayons and 10 yellow crayons. How many crayons are there in all?
  13. 13.12 + ? = 14
  14. 14.8 + 8 + 4 =
  15. 15.There are 4 green beads and 7 blue beads. How many beads are there in all?
  16. 16.Rohan has 5 mangoes and gets 12 mangoes more. How many mangoes does Rohan have now?
  17. 17.There are 6 red kites and 7 yellow kites. How many kites are there in all?
  18. 18.15 + 4 =
  19. 19.Diya has 12 marbles and gets 1 marble more. How many marbles does Diya have now?
  20. 20.8 + 8 =
  21. 21.7 + 1 + 2 =
  22. 22.? + 9 = 12
  23. 23.Tara has 2 balloons and gets 15 balloons more. How many balloons does Tara have now?
  24. 24.Gurpreet has 8 kites and gets 1 kite more. How many kites does Gurpreet have now?
  25. 25.3 + 2 =
  26. 26.1 + 10 =
  27. 27.7 + 1 + 4 =
  28. 28.16 + 2 =
  29. 29.? + 7 = 15
  30. 30.There are 4 yellow flowers and 8 pink flowers. How many flowers are there in all?
  31. 31.9 + ? = 10
  32. 32.8 + 7 + 5 =
  33. 33.3 + 6 =
  34. 34.18 + 2 =
  35. 35.Isha has 8 books and gets 10 books more. How many books does Isha have now?
  36. 36.19 + 1 =
  37. 37.4 + 9 =
  38. 38.There are 7 green balloons and 9 blue balloons. How many balloons are there in all?
  39. 39.? + 1 = 3
  40. 40.1 + 8 + 2 =

Answer key

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

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