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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 476 · 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 10 yellow balloons and 7 blue balloons. How many balloons are there in all?
  2. 2.There are 5 white balloons and 4 green balloons. How many balloons are there in all?
  3. 3.2 + 1 + 7 =
  4. 4.Priya has 12 books and gets 3 books more. How many books does Priya have now?
  5. 5.7 + 1 + 2 =
  6. 6.? + 5 = 6
  7. 7.9 + ? = 20
  8. 8.1 + 14 =
  9. 9.There are 8 green crayons and 11 blue crayons. How many crayons are there in all?
  10. 10.15 + 1 =
  11. 11.There are 3 red flowers and 13 blue flowers. How many flowers are there in all?
  12. 12.Ishaan has 12 kites and gets 5 kites more. How many kites does Ishaan have now?
  13. 13.? + 8 = 20
  14. 14.Priya has 8 books and gets 3 books more. How many books does Priya have now?
  15. 15.Nisha has 15 marbles and gets 3 marbles more. How many marbles does Nisha have now?
  16. 16.Kabir has 7 bananas and gets 10 bananas more. How many bananas does Kabir have now?
  17. 17.1 + 8 + 9 =
  18. 18.14 + 6 =
  19. 19.There are 9 white kites and 11 green kites. How many kites are there in all?
  20. 20.? + 2 = 19
  21. 21.There are 2 white crayons and 18 red crayons. How many crayons are there in all?
  22. 22.10 + ? = 13
  23. 23.16 + 1 =
  24. 24.There are 2 pink kites and 14 blue kites. How many kites are there in all?
  25. 25.16 + 4 =
  26. 26.8 + 8 + 3 =
  27. 27.Saanvi has 4 laddoos and gets 13 laddoos more. How many laddoos does Saanvi have now?
  28. 28.4 + 1 =
  29. 29.5 + 1 + 8 =
  30. 30.6 + 1 =
  31. 31.3 + 3 =
  32. 32.There are 9 white kites and 2 red kites. How many kites are there in all?
  33. 33.17 + 3 =
  34. 34.8 + 1 + 4 =
  35. 35.4 + ? = 14
  36. 36.6 + 10 =
  37. 37.There are 8 red kites and 5 white kites. How many kites are there in all?
  38. 38.15 + 3 =
  39. 39.There are 9 yellow balls and 7 white balls. How many balls are there in all?
  40. 40.2 + ? = 6

Answer key

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

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