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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 87 · 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 = 8
  2. 2.? + 3 = 5
  3. 3.Karan has 5 balls and gets 2 balls more. How many balls does Karan have now?
  4. 4.2 + 2 + 13 =
  5. 5.Rohan has 4 balls and gets 11 balls more. How many balls does Rohan have now?
  6. 6.? + 3 = 6
  7. 7.? + 7 = 15
  8. 8.Isha has 5 crayons and gets 10 crayons more. How many crayons does Isha have now?
  9. 9.6 + 8 + 5 =
  10. 10.10 + 2 =
  11. 11.6 + 3 + 6 =
  12. 12.There are 11 red balloons and 3 green balloons. How many balloons are there in all?
  13. 13.7 + 4 + 1 =
  14. 14.7 + 6 + 2 =
  15. 15.5 + 2 =
  16. 16.14 + 2 =
  17. 17.10 + 9 =
  18. 18.7 + 2 + 1 =
  19. 19.9 + 8 =
  20. 20.7 + 6 + 7 =
  21. 21.7 + 6 + 5 =
  22. 22.5 + 9 =
  23. 23.1 + ? = 11
  24. 24.There are 8 red balloons and 3 green balloons. How many balloons are there in all?
  25. 25.Saanvi has 4 bananas and gets 12 bananas more. How many bananas does Saanvi have now?
  26. 26.? + 11 = 19
  27. 27.Farhan has 9 crayons and gets 1 crayon more. How many crayons does Farhan have now?
  28. 28.6 + 1 + 7 =
  29. 29.4 + 5 =
  30. 30.There are 3 red kites and 15 white kites. How many kites are there in all?
  31. 31.There are 7 blue kites and 6 red kites. How many kites are there in all?
  32. 32.There are 4 red beads and 7 pink beads. How many beads are there in all?
  33. 33.8 + 8 + 4 =
  34. 34.19 + 1 =
  35. 35.2 + 12 =
  36. 36.5 + 6 + 8 =
  37. 37.Isha has 2 mangoes and gets 16 mangoes more. How many mangoes does Isha have now?
  38. 38.5 + 10 =
  39. 39.8 + ? = 15
  40. 40.5 + 14 =

Answer key

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

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