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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 268 · 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 + 5 + 12 =
  2. 2.17 + 3 =
  3. 3.Diya has 6 balls and gets 6 balls more. How many balls does Diya have now?
  4. 4.There are 11 blue crayons and 6 pink crayons. How many crayons are there in all?
  5. 5.1 + ? = 18
  6. 6.8 + ? = 14
  7. 7.12 + 7 =
  8. 8.3 + 7 =
  9. 9.7 + 2 + 2 =
  10. 10.5 + 9 =
  11. 11.There are 9 pink beads and 11 blue beads. How many beads are there in all?
  12. 12.1 + 2 + 5 =
  13. 13.Kavya has 3 pencils and gets 2 pencils more. How many pencils does Kavya have now?
  14. 14.There are 5 blue flowers and 10 red flowers. How many flowers are there in all?
  15. 15.Diya has 12 shells and gets 5 shells more. How many shells does Diya have now?
  16. 16.There are 7 red balloons and 2 green balloons. How many balloons are there in all?
  17. 17.? + 1 = 17
  18. 18.4 + ? = 10
  19. 19.1 + 15 =
  20. 20.4 + ? = 9
  21. 21.4 + 3 =
  22. 22.Priya has 3 flowers and gets 6 flowers more. How many flowers does Priya have now?
  23. 23.6 + 2 =
  24. 24.3 + 6 + 8 =
  25. 25.There are 8 white beads and 11 red beads. How many beads are there in all?
  26. 26.There are 6 pink crayons and 13 blue crayons. How many crayons are there in all?
  27. 27.Ananya has 6 books and gets 6 books more. How many books does Ananya have now?
  28. 28.Kabir has 6 crayons and gets 14 crayons more. How many crayons does Kabir have now?
  29. 29.3 + ? = 4
  30. 30.1 + 5 + 14 =
  31. 31.5 + 8 + 4 =
  32. 32.There are 4 yellow balls and 12 pink balls. How many balls are there in all?
  33. 33.There are 6 yellow beads and 11 red beads. How many beads are there in all?
  34. 34.There are 2 pink balloons and 11 white balloons. How many balloons are there in all?
  35. 35.Riya has 3 balls and gets 5 balls more. How many balls does Riya have now?
  36. 36.Rahul has 11 shells and gets 8 shells more. How many shells does Rahul have now?
  37. 37.11 + 8 =
  38. 38.? + 3 = 7
  39. 39.2 + 7 =
  40. 40.Sneha has 2 pencils and gets 16 pencils more. How many pencils does Sneha have now?

Answer key

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

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