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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 367 · 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. 1.1 + 6 =
  2. 2.4 + 6 + 1 =
  3. 3.1 + 1 + 12 =
  4. 4.11 + 4 =
  5. 5.Ishaan has 5 laddoos and gets 9 laddoos more. How many laddoos does Ishaan have now?
  6. 6.7 + 11 =
  7. 7.There are 3 blue flowers and 2 pink flowers. How many flowers are there in all?
  8. 8.Karan has 7 pencils and gets 13 pencils more. How many pencils does Karan have now?
  9. 9.Sneha has 3 pencils and gets 6 pencils more. How many pencils does Sneha have now?
  10. 10.There are 8 pink beads and 3 green beads. How many beads are there in all?
  11. 11.3 + 9 =
  12. 12.2 + 14 =
  13. 13.There are 4 red beads and 8 white beads. How many beads are there in all?
  14. 14.12 + 1 =
  15. 15.6 + 10 =
  16. 16.There are 10 pink crayons and 9 green crayons. How many crayons are there in all?
  17. 17.There are 2 white balls and 15 red balls. How many balls are there in all?
  18. 18.1 + ? = 3
  19. 19.Kabir has 14 shells and gets 1 shell more. How many shells does Kabir have now?
  20. 20.There are 5 yellow balloons and 11 pink balloons. How many balloons are there in all?
  21. 21.Nisha has 11 bananas and gets 2 bananas more. How many bananas does Nisha have now?
  22. 22.15 + 3 =
  23. 23.3 + 8 + 9 =
  24. 24.8 + 5 =
  25. 25.Isha has 5 laddoos and gets 3 laddoos more. How many laddoos does Isha have now?
  26. 26.3 + ? = 20
  27. 27.? + 2 = 8
  28. 28.1 + 2 + 15 =
  29. 29.Rohan has 5 kites and gets 3 kites more. How many kites does Rohan have now?
  30. 30.3 + 3 + 2 =
  31. 31.2 + 8 + 1 =
  32. 32.Aditya has 8 mangoes and gets 5 mangoes more. How many mangoes does Aditya have now?
  33. 33.? + 3 = 18
  34. 34.? + 7 = 16
  35. 35.There are 11 pink balloons and 3 white balloons. How many balloons are there in all?
  36. 36.5 + 5 + 2 =
  37. 37.There are 6 pink crayons and 8 green crayons. How many crayons are there in all?
  38. 38.4 + ? = 17
  39. 39.5 + 1 + 10 =
  40. 40.There are 4 red balloons and 6 blue balloons. How many balloons are there in all?

Answer key

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

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