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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 970 · 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.There are 9 red crayons and 2 yellow crayons. How many crayons are there in all?
  2. 2.There are 12 pink crayons and 2 white crayons. How many crayons are there in all?
  3. 3.19 + 1 =
  4. 4.There are 9 white balls and 10 blue balls. How many balls are there in all?
  5. 5.Rohan has 2 mangoes and gets 18 mangoes more. How many mangoes does Rohan have now?
  6. 6.17 + 2 =
  7. 7.Gurpreet has 11 balloons and gets 8 balloons more. How many balloons does Gurpreet have now?
  8. 8.14 + 2 =
  9. 9.2 + 3 =
  10. 10.Riya has 3 pencils and gets 15 pencils more. How many pencils does Riya have now?
  11. 11.Rohan has 15 shells and gets 1 shell more. How many shells does Rohan have now?
  12. 12.2 + 8 + 3 =
  13. 13.7 + 1 + 1 =
  14. 14.Vivaan has 9 pencils and gets 1 pencil more. How many pencils does Vivaan have now?
  15. 15.3 + 3 + 9 =
  16. 16.2 + 11 =
  17. 17.1 + ? = 3
  18. 18.17 + ? = 19
  19. 19.Tara has 5 kites and gets 11 kites more. How many kites does Tara have now?
  20. 20.6 + ? = 10
  21. 21.4 + 4 + 5 =
  22. 22.5 + 15 =
  23. 23.15 + 1 =
  24. 24.1 + 4 =
  25. 25.Arjun has 2 balloons and gets 11 balloons more. How many balloons does Arjun have now?
  26. 26.4 + 1 =
  27. 27.4 + 16 =
  28. 28.9 + ? = 12
  29. 29.6 + 1 + 9 =
  30. 30.? + 4 = 9
  31. 31.14 + 1 =
  32. 32.Meera has 14 laddoos and gets 6 laddoos more. How many laddoos does Meera have now?
  33. 33.There are 12 pink kites and 4 yellow kites. How many kites are there in all?
  34. 34.6 + 6 =
  35. 35.7 + 4 =
  36. 36.There are 4 white crayons and 16 yellow crayons. How many crayons are there in all?
  37. 37.15 + 2 =
  38. 38.14 + 4 =
  39. 39.4 + 8 =
  40. 40.There are 10 yellow beads and 8 pink beads. How many beads are there in all?

Answer key

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

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