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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 305 · 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.Kabir has 7 books and gets 6 books more. How many books does Kabir have now?
  2. 2.2 + 5 + 10 =
  3. 3.15 + 3 =
  4. 4.2 + 4 + 4 =
  5. 5.Saanvi has 4 marbles and gets 10 marbles more. How many marbles does Saanvi have now?
  6. 6.1 + 7 + 8 =
  7. 7.Arjun has 9 marbles and gets 1 marble more. How many marbles does Arjun have now?
  8. 8.4 + 6 + 10 =
  9. 9.6 + 5 + 5 =
  10. 10.2 + 6 + 12 =
  11. 11.Aditya has 2 flowers and gets 1 flower more. How many flowers does Aditya have now?
  12. 12.Priya has 11 mangoes and gets 1 mango more. How many mangoes does Priya have now?
  13. 13.There are 11 yellow beads and 6 blue beads. How many beads are there in all?
  14. 14.There are 8 green flowers and 2 pink flowers. How many flowers are there in all?
  15. 15.Pooja has 6 books and gets 1 book more. How many books does Pooja have now?
  16. 16.Lakshmi has 12 marbles and gets 1 marble more. How many marbles does Lakshmi have now?
  17. 17.5 + 8 + 3 =
  18. 18.Joseph has 2 marbles and gets 10 marbles more. How many marbles does Joseph have now?
  19. 19.? + 5 = 17
  20. 20.17 + 2 =
  21. 21.4 + 14 =
  22. 22.Priya has 14 balloons and gets 3 balloons more. How many balloons does Priya have now?
  23. 23.17 + 1 =
  24. 24.1 + ? = 3
  25. 25.There are 11 yellow balloons and 4 green balloons. How many balloons are there in all?
  26. 26.14 + 5 =
  27. 27.? + 1 = 3
  28. 28.Zoya has 11 balloons and gets 2 balloons more. How many balloons does Zoya have now?
  29. 29.15 + 1 =
  30. 30.6 + 8 + 2 =
  31. 31.1 + ? = 13
  32. 32.There are 4 red flowers and 2 green flowers. How many flowers are there in all?
  33. 33.3 + 8 + 2 =
  34. 34.2 + 18 =
  35. 35.Pooja has 6 balls and gets 4 balls more. How many balls does Pooja have now?
  36. 36.Priya has 6 marbles and gets 1 marble more. How many marbles does Priya have now?
  37. 37.1 + 12 =
  38. 38.7 + 8 + 3 =
  39. 39.Arjun has 4 crayons and gets 15 crayons more. How many crayons does Arjun have now?
  40. 40.Vivaan has 8 shells and gets 7 shells more. How many shells does Vivaan have now?

Answer key

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

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