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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 85 · 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 + ? = 19
  2. 2.7 + 8 + 3 =
  3. 3.5 + 4 + 2 =
  4. 4.Karan has 14 pencils and gets 2 pencils more. How many pencils does Karan have now?
  5. 5.Ananya has 10 crayons and gets 5 crayons more. How many crayons does Ananya have now?
  6. 6.7 + 4 + 5 =
  7. 7.There are 8 green kites and 2 yellow kites. How many kites are there in all?
  8. 8.3 + 12 =
  9. 9.1 + ? = 4
  10. 10.Karan has 12 laddoos and gets 4 laddoos more. How many laddoos does Karan have now?
  11. 11.2 + 4 + 2 =
  12. 12.Lakshmi has 9 balls and gets 9 balls more. How many balls does Lakshmi have now?
  13. 13.There are 2 red crayons and 9 green crayons. How many crayons are there in all?
  14. 14.? + 2 = 13
  15. 15.4 + 5 =
  16. 16.There are 4 pink beads and 11 green beads. How many beads are there in all?
  17. 17.Tara has 7 mangoes and gets 9 mangoes more. How many mangoes does Tara have now?
  18. 18.4 + 5 + 3 =
  19. 19.18 + 2 =
  20. 20.16 + 3 =
  21. 21.1 + ? = 12
  22. 22.3 + 1 + 2 =
  23. 23.Dev has 15 marbles and gets 4 marbles more. How many marbles does Dev have now?
  24. 24.1 + ? = 8
  25. 25.There are 3 pink crayons and 14 red crayons. How many crayons are there in all?
  26. 26.9 + 5 =
  27. 27.? + 2 = 4
  28. 28.8 + 1 =
  29. 29.There are 9 green crayons and 4 white crayons. How many crayons are there in all?
  30. 30.Rahul has 2 balloons and gets 4 balloons more. How many balloons does Rahul have now?
  31. 31.3 + 3 =
  32. 32.5 + 4 + 9 =
  33. 33.There are 8 yellow crayons and 3 blue crayons. How many crayons are there in all?
  34. 34.3 + 6 + 4 =
  35. 35.There are 5 white crayons and 4 yellow crayons. How many crayons are there in all?
  36. 36.Pooja has 10 flowers and gets 4 flowers more. How many flowers does Pooja have now?
  37. 37.6 + 8 =
  38. 38.Rohan has 10 marbles and gets 2 marbles more. How many marbles does Rohan have now?
  39. 39.15 + 1 =
  40. 40.Tara has 3 books and gets 13 books more. How many books does Tara have now?

Answer key

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

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