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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 104 · 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 + 8 + 9 =
  2. 2.Priya has 9 balloons and gets 4 balloons more. How many balloons does Priya have now?
  3. 3.Vivaan has 4 balls and gets 2 balls more. How many balls does Vivaan have now?
  4. 4.Riya has 9 books and gets 3 books more. How many books does Riya have now?
  5. 5.18 + 1 =
  6. 6.Ishaan has 11 marbles and gets 6 marbles more. How many marbles does Ishaan have now?
  7. 7.Lakshmi has 7 flowers and gets 2 flowers more. How many flowers does Lakshmi have now?
  8. 8.There are 5 red flowers and 7 pink flowers. How many flowers are there in all?
  9. 9.15 + ? = 19
  10. 10.2 + 7 + 3 =
  11. 11.There are 9 red kites and 9 white kites. How many kites are there in all?
  12. 12.Isha has 5 flowers and gets 8 flowers more. How many flowers does Isha have now?
  13. 13.There are 6 red crayons and 4 pink crayons. How many crayons are there in all?
  14. 14.1 + ? = 6
  15. 15.There are 12 red kites and 7 blue kites. How many kites are there in all?
  16. 16.7 + 7 + 5 =
  17. 17.? + 2 = 11
  18. 18.3 + 5 + 2 =
  19. 19.? + 3 = 9
  20. 20.There are 4 blue kites and 16 white kites. How many kites are there in all?
  21. 21.Diya has 11 pencils and gets 2 pencils more. How many pencils does Diya have now?
  22. 22.3 + ? = 4
  23. 23.1 + 3 + 8 =
  24. 24.5 + 5 + 7 =
  25. 25.8 + 8 + 4 =
  26. 26.2 + 13 =
  27. 27.6 + 12 =
  28. 28.8 + 12 =
  29. 29.Diya has 11 bananas and gets 6 bananas more. How many bananas does Diya have now?
  30. 30.Aarav has 7 balls and gets 5 balls more. How many balls does Aarav have now?
  31. 31.There are 8 white crayons and 3 blue crayons. How many crayons are there in all?
  32. 32.There are 9 pink kites and 3 yellow kites. How many kites are there in all?
  33. 33.There are 3 yellow balloons and 10 white balloons. How many balloons are there in all?
  34. 34.Sneha has 12 crayons and gets 8 crayons more. How many crayons does Sneha have now?
  35. 35.There are 4 red balls and 3 pink balls. How many balls are there in all?
  36. 36.7 + 2 =
  37. 37.1 + ? = 11
  38. 38.Aarav has 8 balls and gets 8 balls more. How many balls does Aarav have now?
  39. 39.There are 11 blue balloons and 8 yellow balloons. How many balloons are there in all?
  40. 40.13 + 2 =

Answer key

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

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