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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 697 · 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. 1.5 + 3 + 8 =
  2. 2.6 + 8 + 4 =
  3. 3.There are 12 pink crayons and 3 blue crayons. How many crayons are there in all?
  4. 4.1 + 2 + 9 =
  5. 5.Rohan has 3 balloons and gets 14 balloons more. How many balloons does Rohan have now?
  6. 6.1 + 4 =
  7. 7.6 + 4 + 5 =
  8. 8.? + 4 = 9
  9. 9.5 + 6 + 4 =
  10. 10.6 + 3 =
  11. 11.There are 9 blue crayons and 10 white crayons. How many crayons are there in all?
  12. 12.19 + 1 =
  13. 13.There are 11 white balloons and 7 blue balloons. How many balloons are there in all?
  14. 14.5 + 7 + 6 =
  15. 15.8 + 8 + 1 =
  16. 16.6 + ? = 17
  17. 17.There are 3 red balls and 3 blue balls. How many balls are there in all?
  18. 18.Arjun has 2 laddoos and gets 18 laddoos more. How many laddoos does Arjun have now?
  19. 19.17 + 1 =
  20. 20.Sneha has 11 bananas and gets 4 bananas more. How many bananas does Sneha have now?
  21. 21.There are 6 pink balls and 2 yellow balls. How many balls are there in all?
  22. 22.There are 4 red kites and 15 pink kites. How many kites are there in all?
  23. 23.14 + 2 =
  24. 24.There are 5 blue balloons and 3 white balloons. How many balloons are there in all?
  25. 25.? + 5 = 9
  26. 26.Aarav has 14 balls and gets 6 balls more. How many balls does Aarav have now?
  27. 27.11 + 9 =
  28. 28.Pooja has 13 shells and gets 1 shell more. How many shells does Pooja have now?
  29. 29.? + 5 = 7
  30. 30.There are 12 red kites and 3 yellow kites. How many kites are there in all?
  31. 31.10 + 7 =
  32. 32.7 + 1 =
  33. 33.11 + ? = 18
  34. 34.Kabir has 6 flowers and gets 12 flowers more. How many flowers does Kabir have now?
  35. 35.There are 2 green balloons and 6 red balloons. How many balloons are there in all?
  36. 36.12 + 6 =
  37. 37.Diya has 6 balloons and gets 12 balloons more. How many balloons does Diya have now?
  38. 38.Isha has 13 shells and gets 2 shells more. How many shells does Isha have now?
  39. 39.12 + ? = 15
  40. 40.4 + ? = 12

Answer key

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

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