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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 536 · 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.Karan has 2 shells and gets 3 shells more. How many shells does Karan have now?
  2. 2.6 + 2 + 8 =
  3. 3.19 + 1 =
  4. 4.1 + 1 + 4 =
  5. 5.1 + ? = 15
  6. 6.Diya has 7 shells and gets 8 shells more. How many shells does Diya have now?
  7. 7.1 + 1 + 3 =
  8. 8.13 + 5 =
  9. 9.5 + 14 =
  10. 10.There are 9 white kites and 7 yellow kites. How many kites are there in all?
  11. 11.1 + 3 + 9 =
  12. 12.Priya has 3 flowers and gets 3 flowers more. How many flowers does Priya have now?
  13. 13.There are 5 yellow flowers and 5 red flowers. How many flowers are there in all?
  14. 14.5 + 5 + 9 =
  15. 15.4 + 11 =
  16. 16.1 + 2 + 5 =
  17. 17.There are 3 yellow balls and 14 blue balls. How many balls are there in all?
  18. 18.? + 12 = 13
  19. 19.2 + ? = 3
  20. 20.There are 10 red crayons and 7 yellow crayons. How many crayons are there in all?
  21. 21.6 + 1 + 9 =
  22. 22.18 + 2 =
  23. 23.2 + ? = 10
  24. 24.16 + 4 =
  25. 25.There are 4 pink flowers and 9 yellow flowers. How many flowers are there in all?
  26. 26.There are 3 blue balls and 8 green balls. How many balls are there in all?
  27. 27.? + 2 = 4
  28. 28.Aditya has 2 bananas and gets 6 bananas more. How many bananas does Aditya have now?
  29. 29.13 + 2 =
  30. 30.6 + 5 + 5 =
  31. 31.Saanvi has 8 bananas and gets 11 bananas more. How many bananas does Saanvi have now?
  32. 32.Ananya has 2 pencils and gets 16 pencils more. How many pencils does Ananya have now?
  33. 33.2 + 2 + 6 =
  34. 34.7 + ? = 15
  35. 35.? + 3 = 9
  36. 36.3 + ? = 10
  37. 37.Rohan has 10 balloons and gets 1 balloon more. How many balloons does Rohan have now?
  38. 38.? + 6 = 8
  39. 39.4 + 4 + 1 =
  40. 40.13 + 1 =

Answer key

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

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