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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 588 · 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. 1.3 + ? = 4
  2. 2.3 + ? = 19
  3. 3.9 + 9 =
  4. 4.? + 1 = 4
  5. 5.14 + 4 =
  6. 6.7 + 3 + 2 =
  7. 7.7 + 3 + 5 =
  8. 8.Priya has 8 flowers and gets 2 flowers more. How many flowers does Priya have now?
  9. 9.There are 7 white balloons and 3 blue balloons. How many balloons are there in all?
  10. 10.There are 3 pink crayons and 10 yellow crayons. How many crayons are there in all?
  11. 11.7 + 1 =
  12. 12.? + 5 = 6
  13. 13.12 + ? = 17
  14. 14.16 + 3 =
  15. 15.9 + 1 =
  16. 16.8 + 6 + 3 =
  17. 17.3 + 6 =
  18. 18.15 + 1 =
  19. 19.Pooja has 11 bananas and gets 5 bananas more. How many bananas does Pooja have now?
  20. 20.There are 5 red crayons and 14 pink crayons. How many crayons are there in all?
  21. 21.? + 1 = 16
  22. 22.2 + 2 + 7 =
  23. 23.2 + ? = 15
  24. 24.Gurpreet has 7 crayons and gets 5 crayons more. How many crayons does Gurpreet have now?
  25. 25.? + 3 = 4
  26. 26.12 + 5 =
  27. 27.There are 9 blue balloons and 8 pink balloons. How many balloons are there in all?
  28. 28.Aditya has 3 bananas and gets 17 bananas more. How many bananas does Aditya have now?
  29. 29.There are 7 red beads and 6 pink beads. How many beads are there in all?
  30. 30.11 + ? = 15
  31. 31.3 + 7 =
  32. 32.3 + 17 =
  33. 33.9 + 10 =
  34. 34.? + 6 = 7
  35. 35.Rahul has 15 kites and gets 5 kites more. How many kites does Rahul have now?
  36. 36.Meera has 7 bananas and gets 4 bananas more. How many bananas does Meera have now?
  37. 37.2 + 7 + 9 =
  38. 38.Aarav has 4 kites and gets 12 kites more. How many kites does Aarav have now?
  39. 39.Meera has 7 laddoos and gets 13 laddoos more. How many laddoos does Meera have now?
  40. 40.4 + 14 =

Answer key

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

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