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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 326 · 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 + 2 + 15 =
  2. 2.1 + 13 =
  3. 3.There are 4 white kites and 2 red kites. How many kites are there in all?
  4. 4.5 + 11 =
  5. 5.4 + 6 =
  6. 6.Zoya has 2 bananas and gets 18 bananas more. How many bananas does Zoya have now?
  7. 7.Isha has 3 mangoes and gets 6 mangoes more. How many mangoes does Isha have now?
  8. 8.There are 2 green balls and 2 yellow balls. How many balls are there in all?
  9. 9.There are 7 green balls and 13 red balls. How many balls are there in all?
  10. 10.There are 11 blue balloons and 6 white balloons. How many balloons are there in all?
  11. 11.There are 6 white crayons and 2 red crayons. How many crayons are there in all?
  12. 12.There are 4 blue balls and 3 yellow balls. How many balls are there in all?
  13. 13.7 + 2 + 9 =
  14. 14.There are 10 green crayons and 8 red crayons. How many crayons are there in all?
  15. 15.4 + 6 + 3 =
  16. 16.15 + 1 =
  17. 17.2 + ? = 3
  18. 18.? + 10 = 18
  19. 19.3 + 3 + 11 =
  20. 20.There are 7 white balls and 7 green balls. How many balls are there in all?
  21. 21.Karan has 7 mangoes and gets 2 mangoes more. How many mangoes does Karan have now?
  22. 22.16 + 3 =
  23. 23.2 + 2 + 1 =
  24. 24.17 + 1 =
  25. 25.Ishaan has 4 laddoos and gets 5 laddoos more. How many laddoos does Ishaan have now?
  26. 26.There are 12 white beads and 6 blue beads. How many beads are there in all?
  27. 27.6 + 3 =
  28. 28.Meera has 4 kites and gets 8 kites more. How many kites does Meera have now?
  29. 29.Rahul has 3 crayons and gets 1 crayon more. How many crayons does Rahul have now?
  30. 30.8 + 8 + 4 =
  31. 31.? + 3 = 12
  32. 32.There are 11 pink beads and 7 blue beads. How many beads are there in all?
  33. 33.Rohan has 3 crayons and gets 11 crayons more. How many crayons does Rohan have now?
  34. 34.5 + 6 + 8 =
  35. 35.1 + 7 + 7 =
  36. 36.Ishaan has 13 marbles and gets 5 marbles more. How many marbles does Ishaan have now?
  37. 37.Isha has 14 crayons and gets 5 crayons more. How many crayons does Isha have now?
  38. 38.Ishaan has 3 bananas and gets 8 bananas more. How many bananas does Ishaan have now?
  39. 39.3 + 6 + 6 =
  40. 40.7 + 2 =

Answer key

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

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