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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 84 · 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.Joseph has 15 marbles and gets 4 marbles more. How many marbles does Joseph have now?
  2. 2.8 + 1 + 9 =
  3. 3.18 + 1 =
  4. 4.6 + 4 + 2 =
  5. 5.3 + ? = 4
  6. 6.2 + ? = 7
  7. 7.Sneha has 2 pencils and gets 7 pencils more. How many pencils does Sneha have now?
  8. 8.1 + 5 + 9 =
  9. 9.17 + 1 =
  10. 10.There are 10 green beads and 10 pink beads. How many beads are there in all?
  11. 11.14 + ? = 15
  12. 12.Arjun has 7 books and gets 7 books more. How many books does Arjun have now?
  13. 13.4 + ? = 19
  14. 14.There are 2 yellow kites and 12 pink kites. How many kites are there in all?
  15. 15.7 + 5 + 2 =
  16. 16.1 + 4 =
  17. 17.There are 6 green kites and 3 red kites. How many kites are there in all?
  18. 18.There are 7 pink flowers and 4 yellow flowers. How many flowers are there in all?
  19. 19.There are 3 blue crayons and 5 red crayons. How many crayons are there in all?
  20. 20.Aditya has 15 balls and gets 2 balls more. How many balls does Aditya have now?
  21. 21.10 + 9 =
  22. 22.Joseph has 10 balloons and gets 10 balloons more. How many balloons does Joseph have now?
  23. 23.1 + ? = 14
  24. 24.Diya has 2 balls and gets 8 balls more. How many balls does Diya have now?
  25. 25.There are 9 red balloons and 3 pink balloons. How many balloons are there in all?
  26. 26.There are 9 red balloons and 10 green balloons. How many balloons are there in all?
  27. 27.There are 12 red crayons and 6 green crayons. How many crayons are there in all?
  28. 28.1 + 16 =
  29. 29.Manav has 2 books and gets 18 books more. How many books does Manav have now?
  30. 30.Nisha has 3 flowers and gets 4 flowers more. How many flowers does Nisha have now?
  31. 31.Isha has 8 pencils and gets 3 pencils more. How many pencils does Isha have now?
  32. 32.19 + 1 =
  33. 33.10 + 8 =
  34. 34.9 + 2 =
  35. 35.Pooja has 9 balloons and gets 8 balloons more. How many balloons does Pooja have now?
  36. 36.14 + 4 =
  37. 37.There are 2 white beads and 10 pink beads. How many beads are there in all?
  38. 38.There are 4 blue flowers and 12 red flowers. How many flowers are there in all?
  39. 39.11 + 3 =
  40. 40.8 + 2 + 2 =

Answer key

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

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