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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 809 · 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 + 5 =
  2. 2.Dev has 6 pencils and gets 3 pencils more. How many pencils does Dev have now?
  3. 3.5 + ? = 6
  4. 4.There are 9 white balls and 2 yellow balls. How many balls are there in all?
  5. 5.Ishaan has 11 pencils and gets 1 pencil more. How many pencils does Ishaan have now?
  6. 6.4 + ? = 9
  7. 7.Vivaan has 12 crayons and gets 1 crayon more. How many crayons does Vivaan have now?
  8. 8.3 + 7 + 3 =
  9. 9.There are 11 red balls and 4 green balls. How many balls are there in all?
  10. 10.2 + 1 =
  11. 11.Vivaan has 6 balloons and gets 2 balloons more. How many balloons does Vivaan have now?
  12. 12.7 + 12 =
  13. 13.5 + 8 =
  14. 14.There are 3 white balloons and 5 blue balloons. How many balloons are there in all?
  15. 15.Rohan has 2 marbles and gets 14 marbles more. How many marbles does Rohan have now?
  16. 16.Pooja has 8 balloons and gets 1 balloon more. How many balloons does Pooja have now?
  17. 17.There are 12 red beads and 3 yellow beads. How many beads are there in all?
  18. 18.5 + ? = 15
  19. 19.There are 4 green beads and 4 blue beads. How many beads are there in all?
  20. 20.Farhan has 11 books and gets 4 books more. How many books does Farhan have now?
  21. 21.5 + 2 + 12 =
  22. 22.1 + 2 + 3 =
  23. 23.There are 7 blue crayons and 6 yellow crayons. How many crayons are there in all?
  24. 24.There are 5 green kites and 5 red kites. How many kites are there in all?
  25. 25.There are 8 green crayons and 4 red crayons. How many crayons are there in all?
  26. 26.? + 17 = 19
  27. 27.6 + ? = 7
  28. 28.Saanvi has 13 flowers and gets 6 flowers more. How many flowers does Saanvi have now?
  29. 29.Manav has 10 mangoes and gets 3 mangoes more. How many mangoes does Manav have now?
  30. 30.15 + ? = 19
  31. 31.11 + 2 =
  32. 32.8 + 4 + 6 =
  33. 33.There are 10 red balloons and 5 blue balloons. How many balloons are there in all?
  34. 34.There are 4 yellow beads and 15 green beads. How many beads are there in all?
  35. 35.1 + 17 =
  36. 36.There are 10 green crayons and 2 red crayons. How many crayons are there in all?
  37. 37.6 + 4 + 4 =
  38. 38.Manav has 10 kites and gets 10 kites more. How many kites does Manav have now?
  39. 39.There are 4 blue crayons and 15 yellow crayons. How many crayons are there in all?
  40. 40.7 + 7 + 2 =

Answer key

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

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