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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 501 · 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 3 yellow balloons and 15 pink balloons. How many balloons are there in all?
  2. 2.Isha has 9 balloons and gets 10 balloons more. How many balloons does Isha have now?
  3. 3.3 + 7 + 9 =
  4. 4.6 + 12 =
  5. 5.There are 7 red beads and 3 white beads. How many beads are there in all?
  6. 6.6 + 8 + 1 =
  7. 7.3 + 8 =
  8. 8.3 + 7 =
  9. 9.There are 4 blue crayons and 14 red crayons. How many crayons are there in all?
  10. 10.6 + 1 + 3 =
  11. 11.There are 4 yellow kites and 6 green kites. How many kites are there in all?
  12. 12.3 + 4 + 9 =
  13. 13.15 + 3 =
  14. 14.1 + ? = 20
  15. 15.? + 9 = 11
  16. 16.? + 5 = 6
  17. 17.6 + ? = 18
  18. 18.There are 9 yellow beads and 2 pink beads. How many beads are there in all?
  19. 19.Rohan has 14 pencils and gets 3 pencils more. How many pencils does Rohan have now?
  20. 20.4 + 3 =
  21. 21.There are 2 white balloons and 10 blue balloons. How many balloons are there in all?
  22. 22.? + 4 = 17
  23. 23.8 + 2 + 7 =
  24. 24.Meera has 11 flowers and gets 2 flowers more. How many flowers does Meera have now?
  25. 25.Sneha has 15 balls and gets 4 balls more. How many balls does Sneha have now?
  26. 26.There are 3 red balloons and 16 pink balloons. How many balloons are there in all?
  27. 27.Kavya has 4 pencils and gets 12 pencils more. How many pencils does Kavya have now?
  28. 28.6 + 14 =
  29. 29.Riya has 13 books and gets 2 books more. How many books does Riya have now?
  30. 30.Sneha has 8 balls and gets 9 balls more. How many balls does Sneha have now?
  31. 31.There are 3 yellow flowers and 11 pink flowers. How many flowers are there in all?
  32. 32.? + 1 = 8
  33. 33.17 + 3 =
  34. 34.There are 10 red beads and 5 green beads. How many beads are there in all?
  35. 35.4 + 13 =
  36. 36.There are 3 blue crayons and 10 pink crayons. How many crayons are there in all?
  37. 37.There are 6 red kites and 12 pink kites. How many kites are there in all?
  38. 38.1 + 3 + 10 =
  39. 39.7 + 12 =
  40. 40.2 + 4 + 14 =

Answer key

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

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