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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 790 · 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. 1.6 + 1 + 4 =
  2. 2.13 + 5 =
  3. 3.10 + 1 =
  4. 4.Manav has 3 laddoos and gets 3 laddoos more. How many laddoos does Manav have now?
  5. 5.13 + ? = 18
  6. 6.3 + 16 =
  7. 7.18 + 2 =
  8. 8.Isha has 7 balls and gets 1 ball more. How many balls does Isha have now?
  9. 9.There are 12 yellow kites and 6 green kites. How many kites are there in all?
  10. 10.4 + ? = 6
  11. 11.10 + 5 =
  12. 12.? + 1 = 6
  13. 13.There are 10 white beads and 2 green beads. How many beads are there in all?
  14. 14.18 + 1 =
  15. 15.Aditya has 11 balls and gets 1 ball more. How many balls does Aditya have now?
  16. 16.12 + 2 =
  17. 17.Rohan has 14 shells and gets 1 shell more. How many shells does Rohan have now?
  18. 18.3 + 6 =
  19. 19.Diya has 5 laddoos and gets 10 laddoos more. How many laddoos does Diya have now?
  20. 20.There are 5 pink balloons and 12 yellow balloons. How many balloons are there in all?
  21. 21.? + 2 = 5
  22. 22.1 + 1 + 1 =
  23. 23.Nisha has 5 flowers and gets 4 flowers more. How many flowers does Nisha have now?
  24. 24.There are 12 green kites and 3 yellow kites. How many kites are there in all?
  25. 25.7 + 6 + 4 =
  26. 26.8 + 11 =
  27. 27.10 + 9 =
  28. 28.1 + 3 + 5 =
  29. 29.Rahul has 2 balls and gets 5 balls more. How many balls does Rahul have now?
  30. 30.Ananya has 13 pencils and gets 2 pencils more. How many pencils does Ananya have now?
  31. 31.1 + ? = 3
  32. 32.7 + 5 + 1 =
  33. 33.2 + 8 + 1 =
  34. 34.Isha has 12 kites and gets 5 kites more. How many kites does Isha have now?
  35. 35.Ishaan has 5 balls and gets 11 balls more. How many balls does Ishaan have now?
  36. 36.Priya has 12 balloons and gets 6 balloons more. How many balloons does Priya have now?
  37. 37.5 + 13 =
  38. 38.7 + 6 + 2 =
  39. 39.4 + 6 + 1 =
  40. 40.? + 15 = 18

Answer key

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

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