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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 343 · 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. 1.8 + 9 =
  2. 2.5 + 3 + 1 =
  3. 3.Diya has 3 crayons and gets 13 crayons more. How many crayons does Diya have now?
  4. 4.1 + 3 + 14 =
  5. 5.16 + 3 =
  6. 6.There are 6 red flowers and 9 pink flowers. How many flowers are there in all?
  7. 7.8 + 8 + 1 =
  8. 8.18 + 2 =
  9. 9.Aditya has 15 mangoes and gets 5 mangoes more. How many mangoes does Aditya have now?
  10. 10.There are 12 blue balls and 3 yellow balls. How many balls are there in all?
  11. 11.There are 10 yellow kites and 8 red kites. How many kites are there in all?
  12. 12.12 + 5 =
  13. 13.Joseph has 4 mangoes and gets 2 mangoes more. How many mangoes does Joseph have now?
  14. 14.4 + 13 =
  15. 15.Ananya has 12 balloons and gets 2 balloons more. How many balloons does Ananya have now?
  16. 16.2 + ? = 6
  17. 17.2 + ? = 10
  18. 18.2 + ? = 3
  19. 19.Lakshmi has 7 crayons and gets 12 crayons more. How many crayons does Lakshmi have now?
  20. 20.12 + ? = 16
  21. 21.8 + 7 + 3 =
  22. 22.6 + 8 =
  23. 23.2 + 1 =
  24. 24.2 + 7 + 11 =
  25. 25.16 + 2 =
  26. 26.There are 4 green balls and 14 white balls. How many balls are there in all?
  27. 27.Tara has 5 balls and gets 8 balls more. How many balls does Tara have now?
  28. 28.6 + 8 + 1 =
  29. 29.17 + 2 =
  30. 30.1 + 6 =
  31. 31.Arjun has 4 flowers and gets 15 flowers more. How many flowers does Arjun have now?
  32. 32.? + 3 = 19
  33. 33.Ishaan has 9 flowers and gets 1 flower more. How many flowers does Ishaan have now?
  34. 34.5 + 3 + 3 =
  35. 35.There are 9 yellow kites and 6 white kites. How many kites are there in all?
  36. 36.Pooja has 6 balls and gets 10 balls more. How many balls does Pooja have now?
  37. 37.9 + 8 =
  38. 38.5 + ? = 20
  39. 39.3 + ? = 7
  40. 40.5 + 2 + 5 =

Answer key

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

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