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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 503 · 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. 1.17 + 1 =
  2. 2.5 + 8 + 1 =
  3. 3.? + 2 = 4
  4. 4.17 + 2 =
  5. 5.There are 2 white kites and 6 yellow kites. How many kites are there in all?
  6. 6.11 + 5 =
  7. 7.There are 3 white flowers and 17 red flowers. How many flowers are there in all?
  8. 8.2 + 3 + 9 =
  9. 9.7 + 2 + 4 =
  10. 10.2 + 3 + 6 =
  11. 11.3 + 14 =
  12. 12.3 + 6 + 8 =
  13. 13.Tara has 3 flowers and gets 6 flowers more. How many flowers does Tara have now?
  14. 14.Rahul has 3 kites and gets 5 kites more. How many kites does Rahul have now?
  15. 15.Saanvi has 7 kites and gets 6 kites more. How many kites does Saanvi have now?
  16. 16.Kabir has 5 crayons and gets 2 crayons more. How many crayons does Kabir have now?
  17. 17.14 + 4 =
  18. 18.Meera has 6 books and gets 3 books more. How many books does Meera have now?
  19. 19.2 + ? = 7
  20. 20.3 + 2 =
  21. 21.There are 3 blue beads and 9 red beads. How many beads are there in all?
  22. 22.1 + ? = 7
  23. 23.? + 5 = 10
  24. 24.4 + 6 + 1 =
  25. 25.Rohan has 12 laddoos and gets 2 laddoos more. How many laddoos does Rohan have now?
  26. 26.2 + ? = 3
  27. 27.18 + 1 =
  28. 28.There are 4 pink balls and 12 blue balls. How many balls are there in all?
  29. 29.? + 14 = 18
  30. 30.Kavya has 6 marbles and gets 7 marbles more. How many marbles does Kavya have now?
  31. 31.18 + 2 =
  32. 32.There are 11 red crayons and 6 blue crayons. How many crayons are there in all?
  33. 33.There are 2 yellow kites and 11 green kites. How many kites are there in all?
  34. 34.Riya has 9 shells and gets 11 shells more. How many shells does Riya have now?
  35. 35.18 + ? = 19
  36. 36.4 + 5 + 4 =
  37. 37.12 + ? = 13
  38. 38.There are 6 green crayons and 7 red crayons. How many crayons are there in all?
  39. 39.Arjun has 2 marbles and gets 14 marbles more. How many marbles does Arjun have now?
  40. 40.There are 3 white balls and 13 yellow balls. How many balls are there in all?

Answer key

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

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