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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 984 · 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 + 2 =
  2. 2.4 + 2 =
  3. 3.? + 9 = 12
  4. 4.7 + ? = 15
  5. 5.14 + 6 =
  6. 6.There are 6 green kites and 8 blue kites. How many kites are there in all?
  7. 7.8 + 11 =
  8. 8.2 + 18 =
  9. 9.4 + 6 + 5 =
  10. 10.5 + 11 =
  11. 11.There are 5 green balls and 15 yellow balls. How many balls are there in all?
  12. 12.1 + 9 =
  13. 13.18 + 1 =
  14. 14.There are 8 white kites and 12 blue kites. How many kites are there in all?
  15. 15.? + 1 = 13
  16. 16.Diya has 14 books and gets 1 book more. How many books does Diya have now?
  17. 17.There are 12 yellow beads and 8 red beads. How many beads are there in all?
  18. 18.1 + 5 =
  19. 19.9 + ? = 15
  20. 20.6 + 2 + 11 =
  21. 21.2 + 1 + 13 =
  22. 22.8 + ? = 12
  23. 23.12 + 4 =
  24. 24.Tara has 12 shells and gets 5 shells more. How many shells does Tara have now?
  25. 25.There are 12 white balloons and 5 yellow balloons. How many balloons are there in all?
  26. 26.There are 4 pink crayons and 9 blue crayons. How many crayons are there in all?
  27. 27.3 + 2 + 15 =
  28. 28.There are 10 green flowers and 4 pink flowers. How many flowers are there in all?
  29. 29.6 + 5 + 6 =
  30. 30.There are 4 blue balloons and 9 white balloons. How many balloons are there in all?
  31. 31.Zoya has 4 pencils and gets 11 pencils more. How many pencils does Zoya have now?
  32. 32.4 + ? = 9
  33. 33.6 + 2 + 12 =
  34. 34.1 + 7 + 10 =
  35. 35.Isha has 3 bananas and gets 16 bananas more. How many bananas does Isha have now?
  36. 36.15 + 5 =
  37. 37.Lakshmi has 11 crayons and gets 6 crayons more. How many crayons does Lakshmi have now?
  38. 38.Zoya has 2 bananas and gets 12 bananas more. How many bananas does Zoya have now?
  39. 39.Aditya has 3 pencils and gets 15 pencils more. How many pencils does Aditya have now?
  40. 40.There are 8 white kites and 8 red kites. How many kites are there in all?

Answer key

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

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