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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 516 · 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. 1.2 + 3 =
  2. 2.Isha has 11 kites and gets 3 kites more. How many kites does Isha have now?
  3. 3.3 + 2 + 14 =
  4. 4.12 + 4 =
  5. 5.3 + 16 =
  6. 6.10 + 6 =
  7. 7.There are 9 red kites and 2 yellow kites. How many kites are there in all?
  8. 8.6 + 6 + 3 =
  9. 9.There are 5 blue crayons and 4 green crayons. How many crayons are there in all?
  10. 10.Ishaan has 9 mangoes and gets 6 mangoes more. How many mangoes does Ishaan have now?
  11. 11.4 + 6 + 10 =
  12. 12.? + 2 = 14
  13. 13.7 + 1 + 7 =
  14. 14.4 + 8 + 7 =
  15. 15.Vivaan has 11 balls and gets 2 balls more. How many balls does Vivaan have now?
  16. 16.Isha has 6 crayons and gets 12 crayons more. How many crayons does Isha have now?
  17. 17.Manav has 9 pencils and gets 1 pencil more. How many pencils does Manav have now?
  18. 18.There are 2 green balloons and 6 red balloons. How many balloons are there in all?
  19. 19.11 + 3 =
  20. 20.8 + ? = 9
  21. 21.Aarav has 3 crayons and gets 5 crayons more. How many crayons does Aarav have now?
  22. 22.? + 6 = 7
  23. 23.4 + 13 =
  24. 24.? + 7 = 15
  25. 25.12 + 1 =
  26. 26.There are 12 red balloons and 5 blue balloons. How many balloons are there in all?
  27. 27.8 + 2 + 9 =
  28. 28.13 + 1 =
  29. 29.There are 8 white flowers and 2 red flowers. How many flowers are there in all?
  30. 30.Ishaan has 7 pencils and gets 10 pencils more. How many pencils does Ishaan have now?
  31. 31.2 + 6 + 1 =
  32. 32.8 + ? = 14
  33. 33.? + 2 = 6
  34. 34.Sneha has 10 flowers and gets 10 flowers more. How many flowers does Sneha have now?
  35. 35.1 + 4 + 4 =
  36. 36.There are 2 red beads and 6 yellow beads. How many beads are there in all?
  37. 37.9 + 1 =
  38. 38.Ananya has 5 crayons and gets 3 crayons more. How many crayons does Ananya have now?
  39. 39.6 + 11 =
  40. 40.18 + 2 =

Answer key

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

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