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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 953 · 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 5 red kites and 14 yellow kites. How many kites are there in all?
  2. 2.? + 18 = 19
  3. 3.4 + ? = 7
  4. 4.7 + 2 + 10 =
  5. 5.8 + 3 + 3 =
  6. 6.There are 9 green kites and 8 blue kites. How many kites are there in all?
  7. 7.? + 2 = 4
  8. 8.Nisha has 10 crayons and gets 4 crayons more. How many crayons does Nisha have now?
  9. 9.There are 3 pink beads and 8 yellow beads. How many beads are there in all?
  10. 10.3 + ? = 7
  11. 11.Diya has 6 laddoos and gets 1 laddoo more. How many laddoos does Diya have now?
  12. 12.Meera has 7 marbles and gets 8 marbles more. How many marbles does Meera have now?
  13. 13.? + 1 = 15
  14. 14.18 + 2 =
  15. 15.8 + 1 + 5 =
  16. 16.4 + 8 + 8 =
  17. 17.5 + ? = 15
  18. 18.There are 9 red kites and 4 blue kites. How many kites are there in all?
  19. 19.Rahul has 5 balls and gets 1 ball more. How many balls does Rahul have now?
  20. 20.6 + 7 + 6 =
  21. 21.12 + 3 =
  22. 22.? + 2 = 13
  23. 23.10 + 6 =
  24. 24.? + 2 = 12
  25. 25.7 + 4 + 6 =
  26. 26.Kavya has 10 laddoos and gets 8 laddoos more. How many laddoos does Kavya have now?
  27. 27.? + 12 = 14
  28. 28.There are 9 red balloons and 4 yellow balloons. How many balloons are there in all?
  29. 29.2 + 3 + 11 =
  30. 30.Arjun has 7 balls and gets 11 balls more. How many balls does Arjun have now?
  31. 31.? + 11 = 20
  32. 32.4 + ? = 19
  33. 33.There are 3 blue flowers and 2 green flowers. How many flowers are there in all?
  34. 34.3 + 11 =
  35. 35.4 + 5 =
  36. 36.Diya has 10 bananas and gets 2 bananas more. How many bananas does Diya have now?
  37. 37.1 + 11 =
  38. 38.6 + 2 + 11 =
  39. 39.3 + ? = 11
  40. 40.There are 8 blue balls and 5 yellow balls. How many balls are there in all?

Answer key

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

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