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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 474 · 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. 1.5 + 7 =
  2. 2.2 + 6 + 6 =
  3. 3.There are 8 yellow balloons and 7 white balloons. How many balloons are there in all?
  4. 4.There are 5 white beads and 5 blue beads. How many beads are there in all?
  5. 5.Isha has 8 kites and gets 8 kites more. How many kites does Isha have now?
  6. 6.? + 3 = 8
  7. 7.18 + 1 =
  8. 8.Pooja has 9 mangoes and gets 1 mango more. How many mangoes does Pooja have now?
  9. 9.3 + ? = 5
  10. 10.4 + 5 =
  11. 11.6 + 1 + 3 =
  12. 12.Ishaan has 5 balloons and gets 1 balloon more. How many balloons does Ishaan have now?
  13. 13.6 + ? = 10
  14. 14.7 + 4 + 7 =
  15. 15.13 + 4 =
  16. 16.3 + 14 =
  17. 17.There are 7 yellow crayons and 6 red crayons. How many crayons are there in all?
  18. 18.8 + 2 + 5 =
  19. 19.There are 2 pink kites and 2 green kites. How many kites are there in all?
  20. 20.2 + 15 =
  21. 21.There are 5 white balloons and 6 pink balloons. How many balloons are there in all?
  22. 22.Aditya has 4 bananas and gets 10 bananas more. How many bananas does Aditya have now?
  23. 23.There are 11 blue crayons and 5 red crayons. How many crayons are there in all?
  24. 24.1 + 3 + 11 =
  25. 25.There are 10 red flowers and 3 white flowers. How many flowers are there in all?
  26. 26.Ishaan has 2 marbles and gets 18 marbles more. How many marbles does Ishaan have now?
  27. 27.Joseph has 14 crayons and gets 6 crayons more. How many crayons does Joseph have now?
  28. 28.1 + 1 + 18 =
  29. 29.18 + 2 =
  30. 30.7 + 6 + 5 =
  31. 31.1 + ? = 14
  32. 32.Kabir has 15 shells and gets 3 shells more. How many shells does Kabir have now?
  33. 33.14 + 4 =
  34. 34.Meera has 8 bananas and gets 3 bananas more. How many bananas does Meera have now?
  35. 35.7 + 8 + 1 =
  36. 36.7 + 1 + 5 =
  37. 37.2 + ? = 16
  38. 38.There are 2 blue flowers and 2 green flowers. How many flowers are there in all?
  39. 39.Arjun has 13 shells and gets 4 shells more. How many shells does Arjun have now?
  40. 40.1 + ? = 6

Answer key

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

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