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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 44 · 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. 1.3 + 8 =
  2. 2.3 + ? = 11
  3. 3.There are 8 blue crayons and 7 pink crayons. How many crayons are there in all?
  4. 4.There are 9 red beads and 7 green beads. How many beads are there in all?
  5. 5.10 + 1 =
  6. 6.2 + 1 + 15 =
  7. 7.18 + 1 =
  8. 8.9 + ? = 15
  9. 9.2 + ? = 4
  10. 10.11 + 2 =
  11. 11.Isha has 8 pencils and gets 2 pencils more. How many pencils does Isha have now?
  12. 12.10 + ? = 11
  13. 13.There are 10 red flowers and 7 pink flowers. How many flowers are there in all?
  14. 14.6 + 6 + 1 =
  15. 15.There are 7 blue balloons and 3 yellow balloons. How many balloons are there in all?
  16. 16.? + 7 = 10
  17. 17.7 + ? = 16
  18. 18.There are 9 green crayons and 9 pink crayons. How many crayons are there in all?
  19. 19.Riya has 6 balloons and gets 2 balloons more. How many balloons does Riya have now?
  20. 20.1 + ? = 3
  21. 21.4 + 1 + 8 =
  22. 22.3 + 17 =
  23. 23.? + 11 = 18
  24. 24.1 + ? = 9
  25. 25.6 + 4 + 9 =
  26. 26.There are 10 blue crayons and 4 red crayons. How many crayons are there in all?
  27. 27.2 + 16 =
  28. 28.Sneha has 15 pencils and gets 2 pencils more. How many pencils does Sneha have now?
  29. 29.There are 10 white balloons and 2 blue balloons. How many balloons are there in all?
  30. 30.2 + 5 + 7 =
  31. 31.Meera has 12 crayons and gets 7 crayons more. How many crayons does Meera have now?
  32. 32.Ananya has 3 flowers and gets 1 flower more. How many flowers does Ananya have now?
  33. 33.There are 3 blue balls and 10 yellow balls. How many balls are there in all?
  34. 34.2 + 1 + 7 =
  35. 35.? + 9 = 14
  36. 36.4 + 7 + 3 =
  37. 37.? + 1 = 4
  38. 38.Lakshmi has 14 books and gets 2 books more. How many books does Lakshmi have now?
  39. 39.Joseph has 12 mangoes and gets 2 mangoes more. How many mangoes does Joseph have now?
  40. 40.Ananya has 8 balls and gets 5 balls more. How many balls does Ananya have now?

Answer key

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

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