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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 914 · 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.? + 3 = 13
  2. 2.Sneha has 6 balls and gets 9 balls more. How many balls does Sneha have now?
  3. 3.9 + 5 =
  4. 4.6 + 5 + 9 =
  5. 5.? + 1 = 4
  6. 6.Zoya has 10 bananas and gets 4 bananas more. How many bananas does Zoya have now?
  7. 7.4 + 9 =
  8. 8.Ishaan has 11 shells and gets 2 shells more. How many shells does Ishaan have now?
  9. 9.Ishaan has 15 pencils and gets 5 pencils more. How many pencils does Ishaan have now?
  10. 10.There are 7 blue flowers and 12 yellow flowers. How many flowers are there in all?
  11. 11.9 + 9 =
  12. 12.There are 5 green balls and 13 red balls. How many balls are there in all?
  13. 13.Ananya has 4 flowers and gets 4 flowers more. How many flowers does Ananya have now?
  14. 14.There are 5 white kites and 15 red kites. How many kites are there in all?
  15. 15.13 + 5 =
  16. 16.6 + 8 + 5 =
  17. 17.2 + ? = 7
  18. 18.Dev has 12 marbles and gets 4 marbles more. How many marbles does Dev have now?
  19. 19.9 + ? = 12
  20. 20.7 + 8 + 5 =
  21. 21.There are 12 red beads and 7 pink beads. How many beads are there in all?
  22. 22.Sneha has 2 balloons and gets 2 balloons more. How many balloons does Sneha have now?
  23. 23.Meera has 6 bananas and gets 9 bananas more. How many bananas does Meera have now?
  24. 24.Joseph has 3 kites and gets 11 kites more. How many kites does Joseph have now?
  25. 25.There are 11 white crayons and 8 red crayons. How many crayons are there in all?
  26. 26.1 + 2 + 9 =
  27. 27.5 + 4 + 7 =
  28. 28.15 + 3 =
  29. 29.? + 16 = 18
  30. 30.? + 2 = 5
  31. 31.There are 8 blue crayons and 2 red crayons. How many crayons are there in all?
  32. 32.3 + ? = 6
  33. 33.6 + 4 + 4 =
  34. 34.19 + 1 =
  35. 35.Aarav has 4 marbles and gets 12 marbles more. How many marbles does Aarav have now?
  36. 36.There are 8 white balls and 12 pink balls. How many balls are there in all?
  37. 37.4 + 8 + 6 =
  38. 38.There are 4 yellow flowers and 2 blue flowers. How many flowers are there in all?
  39. 39.There are 10 red crayons and 3 blue crayons. How many crayons are there in all?
  40. 40.17 + 1 =

Answer key

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

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