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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 828 · 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 + 7 =
  2. 2.? + 5 = 19
  3. 3.Gurpreet has 8 flowers and gets 10 flowers more. How many flowers does Gurpreet have now?
  4. 4.Sneha has 11 bananas and gets 9 bananas more. How many bananas does Sneha have now?
  5. 5.Manav has 8 laddoos and gets 11 laddoos more. How many laddoos does Manav have now?
  6. 6.? + 1 = 18
  7. 7.7 + 13 =
  8. 8.6 + ? = 9
  9. 9.There are 3 pink kites and 13 white kites. How many kites are there in all?
  10. 10.5 + 10 =
  11. 11.There are 3 pink balloons and 6 green balloons. How many balloons are there in all?
  12. 12.There are 6 blue flowers and 12 green flowers. How many flowers are there in all?
  13. 13.1 + 14 =
  14. 14.Ananya has 6 books and gets 13 books more. How many books does Ananya have now?
  15. 15.There are 8 blue flowers and 5 pink flowers. How many flowers are there in all?
  16. 16.There are 6 yellow flowers and 5 pink flowers. How many flowers are there in all?
  17. 17.2 + 7 + 8 =
  18. 18.7 + 7 =
  19. 19.Isha has 5 marbles and gets 7 marbles more. How many marbles does Isha have now?
  20. 20.14 + 3 =
  21. 21.2 + 7 =
  22. 22.16 + ? = 18
  23. 23.Diya has 5 books and gets 3 books more. How many books does Diya have now?
  24. 24.There are 3 blue beads and 9 white beads. How many beads are there in all?
  25. 25.? + 1 = 4
  26. 26.1 + 1 + 7 =
  27. 27.? + 1 = 7
  28. 28.5 + 2 + 7 =
  29. 29.17 + 2 =
  30. 30.6 + 14 =
  31. 31.? + 6 = 11
  32. 32.Lakshmi has 6 balls and gets 8 balls more. How many balls does Lakshmi have now?
  33. 33.Aditya has 6 bananas and gets 8 bananas more. How many bananas does Aditya have now?
  34. 34.There are 3 green crayons and 3 red crayons. How many crayons are there in all?
  35. 35.Saanvi has 11 kites and gets 6 kites more. How many kites does Saanvi have now?
  36. 36.2 + 1 + 17 =
  37. 37.8 + 3 + 9 =
  38. 38.There are 9 red flowers and 4 yellow flowers. How many flowers are there in all?
  39. 39.2 + 2 + 7 =
  40. 40.There are 2 blue kites and 4 red kites. How many kites are there in all?

Answer key

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

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