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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 384 · 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.Ishaan has 13 books and gets 7 books more. How many books does Ishaan have now?
  2. 2.2 + 5 + 10 =
  3. 3.There are 8 yellow flowers and 7 blue flowers. How many flowers are there in all?
  4. 4.? + 4 = 9
  5. 5.? + 1 = 19
  6. 6.18 + 1 =
  7. 7.1 + 1 =
  8. 8.1 + ? = 4
  9. 9.3 + 5 + 12 =
  10. 10.Manav has 13 crayons and gets 2 crayons more. How many crayons does Manav have now?
  11. 11.1 + 12 =
  12. 12.There are 5 red beads and 10 yellow beads. How many beads are there in all?
  13. 13.There are 2 green crayons and 12 yellow crayons. How many crayons are there in all?
  14. 14.There are 11 red beads and 3 white beads. How many beads are there in all?
  15. 15.Riya has 6 mangoes and gets 10 mangoes more. How many mangoes does Riya have now?
  16. 16.There are 4 red balloons and 11 white balloons. How many balloons are there in all?
  17. 17.5 + 8 + 3 =
  18. 18.19 + 1 =
  19. 19.Lakshmi has 11 balls and gets 1 ball more. How many balls does Lakshmi have now?
  20. 20.6 + ? = 13
  21. 21.4 + 4 + 10 =
  22. 22.There are 5 yellow balls and 15 green balls. How many balls are there in all?
  23. 23.1 + 6 + 11 =
  24. 24.8 + 6 =
  25. 25.4 + ? = 17
  26. 26.3 + ? = 4
  27. 27.1 + ? = 9
  28. 28.5 + 7 + 3 =
  29. 29.8 + ? = 10
  30. 30.? + 2 = 4
  31. 31.? + 9 = 14
  32. 32.There are 2 pink kites and 17 yellow kites. How many kites are there in all?
  33. 33.1 + 3 + 4 =
  34. 34.There are 8 red balloons and 3 blue balloons. How many balloons are there in all?
  35. 35.1 + ? = 5
  36. 36.5 + 6 + 1 =
  37. 37.7 + 6 + 4 =
  38. 38.5 + 1 + 3 =
  39. 39.Zoya has 3 pencils and gets 7 pencils more. How many pencils does Zoya have now?
  40. 40.There are 11 red kites and 7 blue kites. How many kites are there in all?

Answer key

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

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