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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 266 · 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.? + 11 = 19
  2. 2.9 + 1 =
  3. 3.There are 3 white beads and 4 blue beads. How many beads are there in all?
  4. 4.12 + 8 =
  5. 5.? + 3 = 9
  6. 6.8 + 8 + 2 =
  7. 7.? + 5 = 7
  8. 8.3 + 8 + 5 =
  9. 9.4 + 3 + 13 =
  10. 10.7 + ? = 13
  11. 11.6 + 8 + 3 =
  12. 12.7 + 3 + 1 =
  13. 13.Tara has 15 balls and gets 1 ball more. How many balls does Tara have now?
  14. 14.There are 11 yellow balloons and 2 red balloons. How many balloons are there in all?
  15. 15.Ishaan has 15 flowers and gets 3 flowers more. How many flowers does Ishaan have now?
  16. 16.16 + 2 =
  17. 17.3 + 6 + 5 =
  18. 18.10 + 8 =
  19. 19.Rohan has 4 balloons and gets 16 balloons more. How many balloons does Rohan have now?
  20. 20.There are 4 yellow kites and 4 red kites. How many kites are there in all?
  21. 21.Isha has 2 balls and gets 3 balls more. How many balls does Isha have now?
  22. 22.2 + 18 =
  23. 23.3 + 17 =
  24. 24.? + 3 = 4
  25. 25.Priya has 12 pencils and gets 1 pencil more. How many pencils does Priya have now?
  26. 26.4 + 6 + 7 =
  27. 27.14 + 2 =
  28. 28.Priya has 4 laddoos and gets 5 laddoos more. How many laddoos does Priya have now?
  29. 29.? + 1 = 12
  30. 30.2 + ? = 4
  31. 31.6 + 5 + 7 =
  32. 32.4 + 5 + 3 =
  33. 33.There are 4 red beads and 2 pink beads. How many beads are there in all?
  34. 34.Kavya has 3 mangoes and gets 5 mangoes more. How many mangoes does Kavya have now?
  35. 35.There are 3 blue kites and 13 red kites. How many kites are there in all?
  36. 36.5 + 1 =
  37. 37.5 + 11 =
  38. 38.There are 8 red crayons and 10 white crayons. How many crayons are there in all?
  39. 39.There are 6 yellow balloons and 11 pink balloons. How many balloons are there in all?
  40. 40.There are 8 white balloons and 9 red balloons. How many balloons are there in all?

Answer key

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

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