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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 72 · 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. 1.7 + ? = 13
  2. 2.19 + 1 =
  3. 3.14 + 3 =
  4. 4.6 + 1 =
  5. 5.Priya has 2 pencils and gets 7 pencils more. How many pencils does Priya have now?
  6. 6.Joseph has 10 balls and gets 2 balls more. How many balls does Joseph have now?
  7. 7.4 + ? = 5
  8. 8.Aditya has 2 laddoos and gets 15 laddoos more. How many laddoos does Aditya have now?
  9. 9.5 + ? = 12
  10. 10.2 + ? = 3
  11. 11.7 + ? = 10
  12. 12.Manav has 8 flowers and gets 3 flowers more. How many flowers does Manav have now?
  13. 13.3 + ? = 8
  14. 14.There are 8 red beads and 7 green beads. How many beads are there in all?
  15. 15.? + 6 = 19
  16. 16.12 + 1 =
  17. 17.? + 5 = 10
  18. 18.Vivaan has 9 laddoos and gets 3 laddoos more. How many laddoos does Vivaan have now?
  19. 19.There are 4 yellow balloons and 5 pink balloons. How many balloons are there in all?
  20. 20.There are 12 blue kites and 4 red kites. How many kites are there in all?
  21. 21.3 + 5 =
  22. 22.2 + 3 + 2 =
  23. 23.2 + 4 + 7 =
  24. 24.? + 3 = 4
  25. 25.6 + 14 =
  26. 26.7 + 1 + 12 =
  27. 27.1 + 2 + 15 =
  28. 28.5 + ? = 18
  29. 29.Kabir has 2 flowers and gets 12 flowers more. How many flowers does Kabir have now?
  30. 30.18 + 2 =
  31. 31.Aditya has 13 bananas and gets 5 bananas more. How many bananas does Aditya have now?
  32. 32.7 + 2 + 4 =
  33. 33.1 + ? = 6
  34. 34.? + 3 = 7
  35. 35.5 + ? = 7
  36. 36.Priya has 3 kites and gets 15 kites more. How many kites does Priya have now?
  37. 37.Aditya has 6 kites and gets 7 kites more. How many kites does Aditya have now?
  38. 38.There are 2 pink balloons and 7 blue balloons. How many balloons are there in all?
  39. 39.9 + ? = 15
  40. 40.3 + 3 =

Answer key

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

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