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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 666 · 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. 1.5 + 6 =
  2. 2.12 + 2 =
  3. 3.There are 12 yellow balls and 6 white balls. How many balls are there in all?
  4. 4.Kabir has 2 pencils and gets 17 pencils more. How many pencils does Kabir have now?
  5. 5.3 + 3 + 9 =
  6. 6.Dev has 11 marbles and gets 8 marbles more. How many marbles does Dev have now?
  7. 7.Priya has 8 crayons and gets 2 crayons more. How many crayons does Priya have now?
  8. 8.Rohan has 11 books and gets 1 book more. How many books does Rohan have now?
  9. 9.There are 4 white balls and 3 red balls. How many balls are there in all?
  10. 10.8 + 4 + 3 =
  11. 11.3 + ? = 8
  12. 12.? + 2 = 12
  13. 13.4 + ? = 14
  14. 14.7 + 8 + 3 =
  15. 15.Ananya has 4 balloons and gets 11 balloons more. How many balloons does Ananya have now?
  16. 16.14 + 4 =
  17. 17.4 + 2 + 3 =
  18. 18.1 + ? = 9
  19. 19.There are 7 red balloons and 11 green balloons. How many balloons are there in all?
  20. 20.Rohan has 6 kites and gets 10 kites more. How many kites does Rohan have now?
  21. 21.Joseph has 15 crayons and gets 1 crayon more. How many crayons does Joseph have now?
  22. 22.3 + 12 =
  23. 23.7 + 4 + 2 =
  24. 24.There are 5 blue balloons and 9 yellow balloons. How many balloons are there in all?
  25. 25.6 + 2 + 11 =
  26. 26.There are 3 yellow beads and 5 white beads. How many beads are there in all?
  27. 27.7 + ? = 16
  28. 28.8 + 3 + 8 =
  29. 29.There are 9 blue balloons and 5 pink balloons. How many balloons are there in all?
  30. 30.Tara has 15 mangoes and gets 2 mangoes more. How many mangoes does Tara have now?
  31. 31.? + 1 = 4
  32. 32.There are 10 green balls and 6 pink balls. How many balls are there in all?
  33. 33.Isha has 2 laddoos and gets 3 laddoos more. How many laddoos does Isha have now?
  34. 34.5 + 8 + 2 =
  35. 35.13 + 2 =
  36. 36.6 + 1 =
  37. 37.Rahul has 12 pencils and gets 8 pencils more. How many pencils does Rahul have now?
  38. 38.There are 9 white flowers and 11 green flowers. How many flowers are there in all?
  39. 39.4 + 13 =
  40. 40.There are 5 red beads and 9 yellow beads. How many beads are there in all?

Answer key

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

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