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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 443 · 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 6 red flowers and 14 pink flowers. How many flowers are there in all?
  2. 2.18 + 1 =
  3. 3.6 + 10 =
  4. 4.Saanvi has 12 bananas and gets 7 bananas more. How many bananas does Saanvi have now?
  5. 5.6 + 3 + 2 =
  6. 6.? + 3 = 6
  7. 7.6 + 5 + 5 =
  8. 8.9 + 5 =
  9. 9.Lakshmi has 8 balls and gets 3 balls more. How many balls does Lakshmi have now?
  10. 10.Gurpreet has 6 marbles and gets 2 marbles more. How many marbles does Gurpreet have now?
  11. 11.There are 8 red beads and 6 blue beads. How many beads are there in all?
  12. 12.There are 3 blue balloons and 7 pink balloons. How many balloons are there in all?
  13. 13.There are 5 white flowers and 7 blue flowers. How many flowers are there in all?
  14. 14.7 + ? = 12
  15. 15.There are 9 red kites and 2 blue kites. How many kites are there in all?
  16. 16.? + 1 = 14
  17. 17.2 + 15 =
  18. 18.9 + 2 =
  19. 19.? + 6 = 16
  20. 20.1 + ? = 3
  21. 21.There are 4 yellow crayons and 3 red crayons. How many crayons are there in all?
  22. 22.There are 11 red crayons and 2 green crayons. How many crayons are there in all?
  23. 23.There are 6 green balloons and 11 yellow balloons. How many balloons are there in all?
  24. 24.Nisha has 4 books and gets 2 books more. How many books does Nisha have now?
  25. 25.Ananya has 2 shells and gets 12 shells more. How many shells does Ananya have now?
  26. 26.19 + 1 =
  27. 27.14 + 6 =
  28. 28.There are 4 pink balloons and 10 green balloons. How many balloons are there in all?
  29. 29.6 + 7 =
  30. 30.6 + 6 + 4 =
  31. 31.3 + 17 =
  32. 32.6 + ? = 11
  33. 33.12 + 2 =
  34. 34.11 + 8 =
  35. 35.Karan has 13 books and gets 3 books more. How many books does Karan have now?
  36. 36.There are 3 red crayons and 9 white crayons. How many crayons are there in all?
  37. 37.11 + 1 =
  38. 38.There are 2 white balls and 13 pink balls. How many balls are there in all?
  39. 39.13 + 1 =
  40. 40.Gurpreet has 6 marbles and gets 3 marbles more. How many marbles does Gurpreet have now?

Answer key

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

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