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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 119 · 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. 1.9 + ? = 13
  2. 2.4 + 2 + 10 =
  3. 3.8 + 3 + 4 =
  4. 4.There are 3 green balloons and 10 yellow balloons. How many balloons are there in all?
  5. 5.19 + 1 =
  6. 6.Karan has 4 kites and gets 11 kites more. How many kites does Karan have now?
  7. 7.Ishaan has 5 laddoos and gets 4 laddoos more. How many laddoos does Ishaan have now?
  8. 8.There are 8 blue kites and 11 pink kites. How many kites are there in all?
  9. 9.11 + 7 =
  10. 10.There are 6 yellow balloons and 4 pink balloons. How many balloons are there in all?
  11. 11.Tara has 2 kites and gets 4 kites more. How many kites does Tara have now?
  12. 12.Farhan has 4 pencils and gets 5 pencils more. How many pencils does Farhan have now?
  13. 13.? + 1 = 20
  14. 14.There are 5 green kites and 8 pink kites. How many kites are there in all?
  15. 15.7 + 2 + 8 =
  16. 16.12 + 4 =
  17. 17.? + 2 = 3
  18. 18.? + 9 = 12
  19. 19.1 + 2 + 11 =
  20. 20.2 + 4 + 5 =
  21. 21.There are 5 pink crayons and 12 blue crayons. How many crayons are there in all?
  22. 22.Aditya has 7 laddoos and gets 10 laddoos more. How many laddoos does Aditya have now?
  23. 23.8 + 2 + 10 =
  24. 24.Meera has 15 laddoos and gets 1 laddoo more. How many laddoos does Meera have now?
  25. 25.Karan has 3 flowers and gets 8 flowers more. How many flowers does Karan have now?
  26. 26.Meera has 7 laddoos and gets 2 laddoos more. How many laddoos does Meera have now?
  27. 27.? + 3 = 5
  28. 28.3 + 7 + 2 =
  29. 29.? + 2 = 8
  30. 30.There are 2 yellow flowers and 14 white flowers. How many flowers are there in all?
  31. 31.4 + 4 + 8 =
  32. 32.Diya has 12 marbles and gets 3 marbles more. How many marbles does Diya have now?
  33. 33.10 + 10 =
  34. 34.There are 12 red beads and 6 pink beads. How many beads are there in all?
  35. 35.Isha has 2 laddoos and gets 5 laddoos more. How many laddoos does Isha have now?
  36. 36.Vivaan has 8 balls and gets 11 balls more. How many balls does Vivaan have now?
  37. 37.1 + 1 =
  38. 38.There are 12 red flowers and 6 green flowers. How many flowers are there in all?
  39. 39.Sneha has 5 balls and gets 5 balls more. How many balls does Sneha have now?
  40. 40.There are 9 pink balloons and 3 yellow balloons. How many balloons are there in all?

Answer key

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

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