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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 520 · 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. 1.18 + 2 =
  2. 2.? + 9 = 19
  3. 3.There are 10 red flowers and 8 yellow flowers. How many flowers are there in all?
  4. 4.2 + 4 + 9 =
  5. 5.There are 6 green crayons and 14 pink crayons. How many crayons are there in all?
  6. 6.3 + 7 + 3 =
  7. 7.There are 4 yellow balloons and 10 red balloons. How many balloons are there in all?
  8. 8.There are 4 pink balls and 13 white balls. How many balls are there in all?
  9. 9.Meera has 4 crayons and gets 7 crayons more. How many crayons does Meera have now?
  10. 10.There are 6 green crayons and 14 red crayons. How many crayons are there in all?
  11. 11.1 + 2 + 6 =
  12. 12.There are 8 blue beads and 3 white beads. How many beads are there in all?
  13. 13.Farhan has 7 kites and gets 1 kite more. How many kites does Farhan have now?
  14. 14.There are 11 white crayons and 8 yellow crayons. How many crayons are there in all?
  15. 15.Aarav has 5 crayons and gets 5 crayons more. How many crayons does Aarav have now?
  16. 16.12 + 3 =
  17. 17.7 + ? = 14
  18. 18.3 + 16 =
  19. 19.2 + 8 + 9 =
  20. 20.4 + 4 + 8 =
  21. 21.Priya has 8 mangoes and gets 11 mangoes more. How many mangoes does Priya have now?
  22. 22.5 + 6 =
  23. 23.Nisha has 15 bananas and gets 2 bananas more. How many bananas does Nisha have now?
  24. 24.Vivaan has 7 kites and gets 13 kites more. How many kites does Vivaan have now?
  25. 25.3 + 1 + 10 =
  26. 26.There are 10 blue beads and 10 red beads. How many beads are there in all?
  27. 27.16 + 3 =
  28. 28.5 + 1 =
  29. 29.Joseph has 15 crayons and gets 1 crayon more. How many crayons does Joseph have now?
  30. 30.Aditya has 11 flowers and gets 2 flowers more. How many flowers does Aditya have now?
  31. 31.3 + 5 =
  32. 32.? + 5 = 7
  33. 33.Vivaan has 14 bananas and gets 5 bananas more. How many bananas does Vivaan have now?
  34. 34.Meera has 7 kites and gets 12 kites more. How many kites does Meera have now?
  35. 35.13 + 3 =
  36. 36.There are 11 yellow beads and 8 green beads. How many beads are there in all?
  37. 37.There are 6 blue balls and 13 white balls. How many balls are there in all?
  38. 38.There are 6 pink crayons and 8 red crayons. How many crayons are there in all?
  39. 39.There are 9 yellow crayons and 10 pink crayons. How many crayons are there in all?
  40. 40.17 + 1 =

Answer key

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

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