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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 569 · 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.Tara has 6 books and gets 11 books more. How many books does Tara have now?
  2. 2.6 + 7 + 1 =
  3. 3.There are 8 white kites and 10 red kites. How many kites are there in all?
  4. 4.8 + 5 =
  5. 5.15 + 1 =
  6. 6.7 + ? = 8
  7. 7.Kabir has 5 shells and gets 11 shells more. How many shells does Kabir have now?
  8. 8.8 + 3 + 5 =
  9. 9.6 + 2 + 10 =
  10. 10.There are 10 blue flowers and 2 red flowers. How many flowers are there in all?
  11. 11.There are 5 blue balls and 8 yellow balls. How many balls are there in all?
  12. 12.Isha has 4 balloons and gets 1 balloon more. How many balloons does Isha have now?
  13. 13.7 + 7 + 3 =
  14. 14.There are 8 white beads and 12 yellow beads. How many beads are there in all?
  15. 15.There are 12 blue flowers and 5 green flowers. How many flowers are there in all?
  16. 16.Joseph has 10 bananas and gets 3 bananas more. How many bananas does Joseph have now?
  17. 17.? + 11 = 17
  18. 18.? + 15 = 20
  19. 19.3 + 4 =
  20. 20.1 + ? = 3
  21. 21.10 + ? = 17
  22. 22.8 + ? = 18
  23. 23.Ishaan has 3 balls and gets 16 balls more. How many balls does Ishaan have now?
  24. 24.7 + 5 =
  25. 25.There are 7 green beads and 8 pink beads. How many beads are there in all?
  26. 26.There are 2 red crayons and 4 pink crayons. How many crayons are there in all?
  27. 27.? + 1 = 7
  28. 28.4 + 14 =
  29. 29.6 + 2 + 2 =
  30. 30.5 + 10 =
  31. 31.10 + 3 =
  32. 32.There are 8 pink beads and 4 green beads. How many beads are there in all?
  33. 33.Vivaan has 13 shells and gets 4 shells more. How many shells does Vivaan have now?
  34. 34.Ananya has 12 flowers and gets 1 flower more. How many flowers does Ananya have now?
  35. 35.Sneha has 14 mangoes and gets 5 mangoes more. How many mangoes does Sneha have now?
  36. 36.1 + 13 =
  37. 37.There are 8 red kites and 5 pink kites. How many kites are there in all?
  38. 38.2 + ? = 14
  39. 39.? + 8 = 10
  40. 40.Aditya has 12 marbles and gets 3 marbles more. How many marbles does Aditya have now?

Answer key

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

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