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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 834 · 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.Ananya has 8 marbles and gets 12 marbles more. How many marbles does Ananya have now?
  2. 2.8 + 4 + 6 =
  3. 3.2 + 2 + 4 =
  4. 4.13 + 2 =
  5. 5.5 + 5 + 3 =
  6. 6.There are 10 pink balls and 8 yellow balls. How many balls are there in all?
  7. 7.10 + 4 =
  8. 8.15 + ? = 20
  9. 9.19 + 1 =
  10. 10.7 + 9 =
  11. 11.5 + 4 + 2 =
  12. 12.Rohan has 10 laddoos and gets 2 laddoos more. How many laddoos does Rohan have now?
  13. 13.Aarav has 10 laddoos and gets 6 laddoos more. How many laddoos does Aarav have now?
  14. 14.Vivaan has 8 books and gets 3 books more. How many books does Vivaan have now?
  15. 15.Dev has 7 books and gets 7 books more. How many books does Dev have now?
  16. 16.2 + 15 =
  17. 17.4 + 2 + 5 =
  18. 18.? + 4 = 6
  19. 19.3 + 12 =
  20. 20.6 + 13 =
  21. 21.Vivaan has 14 marbles and gets 3 marbles more. How many marbles does Vivaan have now?
  22. 22.Karan has 3 marbles and gets 13 marbles more. How many marbles does Karan have now?
  23. 23.5 + 1 =
  24. 24.15 + 4 =
  25. 25.1 + 1 + 8 =
  26. 26.7 + 3 + 2 =
  27. 27.? + 8 = 9
  28. 28.5 + 1 + 1 =
  29. 29.Rahul has 12 kites and gets 5 kites more. How many kites does Rahul have now?
  30. 30.4 + 3 =
  31. 31.Isha has 4 marbles and gets 14 marbles more. How many marbles does Isha have now?
  32. 32.Vivaan has 11 books and gets 1 book more. How many books does Vivaan have now?
  33. 33.18 + 1 =
  34. 34.4 + 8 =
  35. 35.Joseph has 7 flowers and gets 3 flowers more. How many flowers does Joseph have now?
  36. 36.6 + 8 + 6 =
  37. 37.There are 10 white balls and 2 pink balls. How many balls are there in all?
  38. 38.8 + 7 =
  39. 39.There are 9 pink kites and 9 red kites. How many kites are there in all?
  40. 40.There are 9 pink beads and 10 yellow beads. How many beads are there in all?

Answer key

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

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