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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 857 · 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. 1.15 + 1 =
  2. 2.There are 9 white crayons and 7 red crayons. How many crayons are there in all?
  3. 3.13 + 3 =
  4. 4.Arjun has 11 shells and gets 2 shells more. How many shells does Arjun have now?
  5. 5.There are 11 pink balloons and 4 yellow balloons. How many balloons are there in all?
  6. 6.1 + 5 + 14 =
  7. 7.Ananya has 7 books and gets 1 book more. How many books does Ananya have now?
  8. 8.There are 3 yellow crayons and 14 pink crayons. How many crayons are there in all?
  9. 9.? + 13 = 16
  10. 10.There are 7 yellow flowers and 5 blue flowers. How many flowers are there in all?
  11. 11.7 + 8 =
  12. 12.3 + 1 + 3 =
  13. 13.10 + 6 =
  14. 14.6 + 7 + 4 =
  15. 15.Rahul has 2 balls and gets 4 balls more. How many balls does Rahul have now?
  16. 16.2 + 5 + 9 =
  17. 17.Aditya has 7 balloons and gets 4 balloons more. How many balloons does Aditya have now?
  18. 18.There are 10 yellow balloons and 9 green balloons. How many balloons are there in all?
  19. 19.3 + 1 =
  20. 20.1 + ? = 8
  21. 21.There are 11 pink kites and 8 blue kites. How many kites are there in all?
  22. 22.Priya has 15 crayons and gets 5 crayons more. How many crayons does Priya have now?
  23. 23.1 + ? = 4
  24. 24.Meera has 2 bananas and gets 14 bananas more. How many bananas does Meera have now?
  25. 25.Aditya has 12 pencils and gets 1 pencil more. How many pencils does Aditya have now?
  26. 26.1 + 10 =
  27. 27.9 + 5 =
  28. 28.Rohan has 3 kites and gets 3 kites more. How many kites does Rohan have now?
  29. 29.18 + 2 =
  30. 30.There are 5 blue balls and 2 green balls. How many balls are there in all?
  31. 31.2 + 6 + 11 =
  32. 32.There are 2 blue balls and 14 white balls. How many balls are there in all?
  33. 33.Vivaan has 3 bananas and gets 10 bananas more. How many bananas does Vivaan have now?
  34. 34.? + 4 = 18
  35. 35.2 + 17 =
  36. 36.1 + ? = 3
  37. 37.There are 3 yellow balloons and 7 white balloons. How many balloons are there in all?
  38. 38.There are 8 red crayons and 12 white crayons. How many crayons are there in all?
  39. 39.? + 4 = 6
  40. 40.Rohan has 9 marbles and gets 4 marbles more. How many marbles does Rohan have now?

Answer key

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

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