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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 80 · 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.Lakshmi has 12 flowers and gets 1 flower more. How many flowers does Lakshmi have now?
  2. 2.? + 1 = 10
  3. 3.17 + 3 =
  4. 4.Gurpreet has 9 marbles and gets 4 marbles more. How many marbles does Gurpreet have now?
  5. 5.Aditya has 2 shells and gets 13 shells more. How many shells does Aditya have now?
  6. 6.There are 12 green balls and 6 yellow balls. How many balls are there in all?
  7. 7.There are 4 yellow kites and 15 blue kites. How many kites are there in all?
  8. 8.7 + 3 + 7 =
  9. 9.There are 7 green crayons and 3 red crayons. How many crayons are there in all?
  10. 10.Sneha has 3 flowers and gets 1 flower more. How many flowers does Sneha have now?
  11. 11.? + 1 = 9
  12. 12.There are 12 red balloons and 2 blue balloons. How many balloons are there in all?
  13. 13.There are 10 pink kites and 3 blue kites. How many kites are there in all?
  14. 14.7 + 7 + 5 =
  15. 15.1 + 7 + 7 =
  16. 16.2 + ? = 3
  17. 17.There are 2 white balls and 3 pink balls. How many balls are there in all?
  18. 18.? + 3 = 5
  19. 19.? + 2 = 3
  20. 20.5 + 3 + 1 =
  21. 21.17 + 2 =
  22. 22.Meera has 10 books and gets 8 books more. How many books does Meera have now?
  23. 23.1 + 8 + 5 =
  24. 24.There are 11 pink beads and 6 green beads. How many beads are there in all?
  25. 25.1 + 6 + 11 =
  26. 26.3 + 3 =
  27. 27.Dev has 14 kites and gets 2 kites more. How many kites does Dev have now?
  28. 28.There are 10 red beads and 3 yellow beads. How many beads are there in all?
  29. 29.Pooja has 8 crayons and gets 3 crayons more. How many crayons does Pooja have now?
  30. 30.2 + 14 =
  31. 31.5 + 13 =
  32. 32.There are 6 pink balls and 12 white balls. How many balls are there in all?
  33. 33.6 + 5 + 9 =
  34. 34.1 + 4 =
  35. 35.Gurpreet has 14 shells and gets 4 shells more. How many shells does Gurpreet have now?
  36. 36.3 + ? = 5
  37. 37.19 + 1 =
  38. 38.2 + 18 =
  39. 39.Aditya has 7 books and gets 4 books more. How many books does Aditya have now?
  40. 40.2 + ? = 6

Answer key

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

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