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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 578 · 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. 1.1 + 3 + 9 =
  2. 2.5 + 14 =
  3. 3.Priya has 14 laddoos and gets 4 laddoos more. How many laddoos does Priya have now?
  4. 4.Rahul has 6 mangoes and gets 14 mangoes more. How many mangoes does Rahul have now?
  5. 5.Pooja has 5 balloons and gets 7 balloons more. How many balloons does Pooja have now?
  6. 6.Lakshmi has 12 laddoos and gets 1 laddoo more. How many laddoos does Lakshmi have now?
  7. 7.Zoya has 6 books and gets 2 books more. How many books does Zoya have now?
  8. 8.4 + 7 =
  9. 9.Priya has 9 balls and gets 8 balls more. How many balls does Priya have now?
  10. 10.There are 4 yellow balloons and 14 green balloons. How many balloons are there in all?
  11. 11.Saanvi has 4 mangoes and gets 6 mangoes more. How many mangoes does Saanvi have now?
  12. 12.Rahul has 6 marbles and gets 11 marbles more. How many marbles does Rahul have now?
  13. 13.? + 17 = 18
  14. 14.9 + 5 =
  15. 15.5 + 2 + 11 =
  16. 16.Kabir has 8 balloons and gets 8 balloons more. How many balloons does Kabir have now?
  17. 17.There are 5 green kites and 14 white kites. How many kites are there in all?
  18. 18.13 + 1 =
  19. 19.6 + 6 + 4 =
  20. 20.11 + 3 =
  21. 21.3 + 3 =
  22. 22.1 + 1 + 8 =
  23. 23.7 + 7 =
  24. 24.8 + 7 + 4 =
  25. 25.5 + 7 + 1 =
  26. 26.Sneha has 6 flowers and gets 11 flowers more. How many flowers does Sneha have now?
  27. 27.5 + 1 + 2 =
  28. 28.There are 7 white beads and 6 pink beads. How many beads are there in all?
  29. 29.8 + 1 + 10 =
  30. 30.4 + ? = 8
  31. 31.3 + ? = 8
  32. 32.6 + 5 + 1 =
  33. 33.1 + ? = 10
  34. 34.12 + 7 =
  35. 35.13 + 2 =
  36. 36.2 + 8 + 5 =
  37. 37.18 + 1 =
  38. 38.There are 2 blue flowers and 17 yellow flowers. How many flowers are there in all?
  39. 39.6 + ? = 20
  40. 40.There are 10 yellow flowers and 3 white flowers. How many flowers are there in all?

Answer key

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

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