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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 737 · 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 + ? = 4
  2. 2.19 + 1 =
  3. 3.? + 9 = 11
  4. 4.16 + 2 =
  5. 5.8 + ? = 18
  6. 6.Kabir has 10 marbles and gets 10 marbles more. How many marbles does Kabir have now?
  7. 7.? + 7 = 8
  8. 8.? + 5 = 7
  9. 9.There are 3 pink flowers and 5 red flowers. How many flowers are there in all?
  10. 10.Rahul has 10 kites and gets 2 kites more. How many kites does Rahul have now?
  11. 11.6 + 8 + 1 =
  12. 12.There are 4 blue beads and 2 red beads. How many beads are there in all?
  13. 13.There are 4 pink balls and 10 yellow balls. How many balls are there in all?
  14. 14.There are 9 blue beads and 3 green beads. How many beads are there in all?
  15. 15.There are 2 blue kites and 11 red kites. How many kites are there in all?
  16. 16.3 + 6 + 6 =
  17. 17.1 + 2 + 4 =
  18. 18.There are 4 white crayons and 10 green crayons. How many crayons are there in all?
  19. 19.Riya has 14 marbles and gets 6 marbles more. How many marbles does Riya have now?
  20. 20.2 + 14 =
  21. 21.Diya has 7 crayons and gets 13 crayons more. How many crayons does Diya have now?
  22. 22.Kavya has 3 kites and gets 2 kites more. How many kites does Kavya have now?
  23. 23.? + 11 = 17
  24. 24.? + 2 = 6
  25. 25.6 + 1 + 9 =
  26. 26.2 + 6 + 5 =
  27. 27.Rahul has 8 mangoes and gets 2 mangoes more. How many mangoes does Rahul have now?
  28. 28.2 + 11 =
  29. 29.There are 7 yellow flowers and 4 green flowers. How many flowers are there in all?
  30. 30.There are 6 yellow beads and 4 green beads. How many beads are there in all?
  31. 31.There are 8 red balls and 9 blue balls. How many balls are there in all?
  32. 32.There are 11 blue balloons and 4 red balloons. How many balloons are there in all?
  33. 33.Diya has 15 balls and gets 3 balls more. How many balls does Diya have now?
  34. 34.8 + 8 + 4 =
  35. 35.? + 7 = 12
  36. 36.Zoya has 11 marbles and gets 1 marble more. How many marbles does Zoya have now?
  37. 37.There are 12 white balls and 7 red balls. How many balls are there in all?
  38. 38.3 + 7 + 9 =
  39. 39.Saanvi has 8 balls and gets 12 balls more. How many balls does Saanvi have now?
  40. 40.There are 2 red crayons and 13 yellow crayons. How many crayons are there in all?

Answer key

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

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