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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 297 · 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.? + 1 = 14
  2. 2.There are 5 blue crayons and 6 yellow crayons. How many crayons are there in all?
  3. 3.There are 6 blue kites and 3 pink kites. How many kites are there in all?
  4. 4.Aarav has 15 balls and gets 5 balls more. How many balls does Aarav have now?
  5. 5.? + 2 = 3
  6. 6.4 + 5 =
  7. 7.There are 8 blue balloons and 11 yellow balloons. How many balloons are there in all?
  8. 8.8 + 3 =
  9. 9.5 + 2 + 2 =
  10. 10.1 + ? = 5
  11. 11.Lakshmi has 9 shells and gets 7 shells more. How many shells does Lakshmi have now?
  12. 12.? + 6 = 9
  13. 13.Meera has 6 flowers and gets 3 flowers more. How many flowers does Meera have now?
  14. 14.There are 2 blue balloons and 13 red balloons. How many balloons are there in all?
  15. 15.Pooja has 11 balloons and gets 5 balloons more. How many balloons does Pooja have now?
  16. 16.4 + ? = 19
  17. 17.5 + ? = 14
  18. 18.Priya has 4 pencils and gets 16 pencils more. How many pencils does Priya have now?
  19. 19.11 + 2 =
  20. 20.7 + 2 + 9 =
  21. 21.12 + 2 =
  22. 22.1 + ? = 3
  23. 23.1 + 3 =
  24. 24.17 + 1 =
  25. 25.9 + 4 =
  26. 26.2 + ? = 4
  27. 27.? + 6 = 16
  28. 28.8 + 7 + 1 =
  29. 29.5 + 4 + 11 =
  30. 30.Isha has 8 balloons and gets 1 balloon more. How many balloons does Isha have now?
  31. 31.12 + ? = 19
  32. 32.18 + 2 =
  33. 33.3 + 2 + 15 =
  34. 34.There are 5 red balloons and 13 blue balloons. How many balloons are there in all?
  35. 35.Vivaan has 12 pencils and gets 6 pencils more. How many pencils does Vivaan have now?
  36. 36.16 + ? = 17
  37. 37.11 + ? = 17
  38. 38.Rohan has 4 pencils and gets 13 pencils more. How many pencils does Rohan have now?
  39. 39.12 + 3 =
  40. 40.12 + 1 =

Answer key

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

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