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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 468 · 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 11 white balloons and 6 blue balloons. How many balloons are there in all?
  2. 2.Riya has 4 balloons and gets 5 balloons more. How many balloons does Riya have now?
  3. 3.18 + 2 =
  4. 4.13 + 7 =
  5. 5.1 + ? = 7
  6. 6.Arjun has 4 balloons and gets 15 balloons more. How many balloons does Arjun have now?
  7. 7.Riya has 5 books and gets 9 books more. How many books does Riya have now?
  8. 8.There are 4 yellow kites and 14 pink kites. How many kites are there in all?
  9. 9.There are 9 red balls and 7 blue balls. How many balls are there in all?
  10. 10.4 + 8 + 8 =
  11. 11.9 + 5 =
  12. 12.There are 10 pink flowers and 3 white flowers. How many flowers are there in all?
  13. 13.There are 7 yellow beads and 8 white beads. How many beads are there in all?
  14. 14.8 + 3 + 8 =
  15. 15.There are 7 yellow beads and 5 pink beads. How many beads are there in all?
  16. 16.There are 3 red kites and 14 green kites. How many kites are there in all?
  17. 17.? + 3 = 6
  18. 18.7 + ? = 13
  19. 19.Meera has 4 crayons and gets 5 crayons more. How many crayons does Meera have now?
  20. 20.2 + 6 + 7 =
  21. 21.7 + 2 =
  22. 22.? + 14 = 15
  23. 23.Kabir has 15 marbles and gets 5 marbles more. How many marbles does Kabir have now?
  24. 24.6 + 3 =
  25. 25.? + 10 = 11
  26. 26.There are 4 red kites and 9 green kites. How many kites are there in all?
  27. 27.17 + 3 =
  28. 28.2 + ? = 11
  29. 29.There are 8 yellow beads and 12 blue beads. How many beads are there in all?
  30. 30.6 + 1 + 1 =
  31. 31.? + 4 = 6
  32. 32.1 + ? = 6
  33. 33.There are 2 blue flowers and 9 red flowers. How many flowers are there in all?
  34. 34.There are 3 blue beads and 16 yellow beads. How many beads are there in all?
  35. 35.1 + 1 + 15 =
  36. 36.Rahul has 2 marbles and gets 6 marbles more. How many marbles does Rahul have now?
  37. 37.Saanvi has 9 balloons and gets 7 balloons more. How many balloons does Saanvi have now?
  38. 38.Aditya has 14 balls and gets 4 balls more. How many balls does Aditya have now?
  39. 39.? + 9 = 13
  40. 40.Dev has 5 kites and gets 14 kites more. How many kites does Dev have now?

Answer key

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

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