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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 450 · 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. 1.8 + ? = 14
  2. 2.8 + 3 + 9 =
  3. 3.8 + 8 + 2 =
  4. 4.There are 10 green beads and 4 white beads. How many beads are there in all?
  5. 5.1 + 2 + 5 =
  6. 6.? + 9 = 10
  7. 7.There are 10 green balls and 5 pink balls. How many balls are there in all?
  8. 8.? + 9 = 12
  9. 9.19 + 1 =
  10. 10.13 + 2 =
  11. 11.There are 2 white flowers and 6 blue flowers. How many flowers are there in all?
  12. 12.? + 14 = 18
  13. 13.? + 9 = 17
  14. 14.13 + 7 =
  15. 15.17 + 1 =
  16. 16.Nisha has 10 shells and gets 3 shells more. How many shells does Nisha have now?
  17. 17.There are 11 pink crayons and 9 red crayons. How many crayons are there in all?
  18. 18.Tara has 10 kites and gets 1 kite more. How many kites does Tara have now?
  19. 19.2 + 5 + 8 =
  20. 20.Dev has 8 kites and gets 6 kites more. How many kites does Dev have now?
  21. 21.? + 16 = 20
  22. 22.There are 3 red balls and 17 pink balls. How many balls are there in all?
  23. 23.Manav has 7 balloons and gets 1 balloon more. How many balloons does Manav have now?
  24. 24.Gurpreet has 8 books and gets 8 books more. How many books does Gurpreet have now?
  25. 25.6 + ? = 8
  26. 26.13 + 6 =
  27. 27.12 + ? = 19
  28. 28.Meera has 11 laddoos and gets 1 laddoo more. How many laddoos does Meera have now?
  29. 29.8 + ? = 20
  30. 30.There are 4 blue flowers and 15 red flowers. How many flowers are there in all?
  31. 31.6 + 5 + 7 =
  32. 32.There are 2 white crayons and 12 yellow crayons. How many crayons are there in all?
  33. 33.4 + 6 + 5 =
  34. 34.Kabir has 15 kites and gets 2 kites more. How many kites does Kabir have now?
  35. 35.Zoya has 14 marbles and gets 5 marbles more. How many marbles does Zoya have now?
  36. 36.There are 9 red balls and 10 green balls. How many balls are there in all?
  37. 37.Gurpreet has 14 balls and gets 1 ball more. How many balls does Gurpreet have now?
  38. 38.2 + 6 =
  39. 39.7 + 4 + 1 =
  40. 40.Tara has 3 shells and gets 13 shells more. How many shells does Tara have now?

Answer key

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

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