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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 55 · 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.Farhan has 5 laddoos and gets 5 laddoos more. How many laddoos does Farhan have now?
  2. 2.There are 4 yellow crayons and 11 blue crayons. How many crayons are there in all?
  3. 3.? + 4 = 20
  4. 4.There are 6 green beads and 9 white beads. How many beads are there in all?
  5. 5.? + 11 = 15
  6. 6.There are 8 green flowers and 10 white flowers. How many flowers are there in all?
  7. 7.3 + 8 + 5 =
  8. 8.18 + 1 =
  9. 9.3 + ? = 12
  10. 10.Kabir has 15 mangoes and gets 4 mangoes more. How many mangoes does Kabir have now?
  11. 11.Kavya has 15 marbles and gets 3 marbles more. How many marbles does Kavya have now?
  12. 12.Ishaan has 10 mangoes and gets 1 mango more. How many mangoes does Ishaan have now?
  13. 13.Diya has 14 kites and gets 5 kites more. How many kites does Diya have now?
  14. 14.5 + ? = 16
  15. 15.? + 10 = 11
  16. 16.4 + 1 + 10 =
  17. 17.Pooja has 6 marbles and gets 10 marbles more. How many marbles does Pooja have now?
  18. 18.There are 4 green balloons and 13 pink balloons. How many balloons are there in all?
  19. 19.Aarav has 2 marbles and gets 6 marbles more. How many marbles does Aarav have now?
  20. 20.Saanvi has 10 balls and gets 1 ball more. How many balls does Saanvi have now?
  21. 21.Arjun has 6 mangoes and gets 14 mangoes more. How many mangoes does Arjun have now?
  22. 22.8 + 7 + 2 =
  23. 23.19 + 1 =
  24. 24.4 + 4 =
  25. 25.There are 8 green kites and 8 pink kites. How many kites are there in all?
  26. 26.There are 7 blue flowers and 2 yellow flowers. How many flowers are there in all?
  27. 27.Ishaan has 5 mangoes and gets 6 mangoes more. How many mangoes does Ishaan have now?
  28. 28.6 + 1 + 9 =
  29. 29.2 + 2 + 8 =
  30. 30.11 + 4 =
  31. 31.There are 2 green kites and 2 pink kites. How many kites are there in all?
  32. 32.17 + 1 =
  33. 33.4 + 1 =
  34. 34.1 + 3 =
  35. 35.6 + 13 =
  36. 36.6 + 2 + 5 =
  37. 37.1 + 5 + 14 =
  38. 38.There are 12 red flowers and 2 white flowers. How many flowers are there in all?
  39. 39.1 + 3 + 3 =
  40. 40.There are 2 red balloons and 12 white balloons. How many balloons are there in all?

Answer key

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

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