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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 488 · 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.Ananya has 5 mangoes and gets 11 mangoes more. How many mangoes does Ananya have now?
  2. 2.? + 9 = 10
  3. 3.There are 2 white kites and 13 red kites. How many kites are there in all?
  4. 4.There are 5 green balloons and 15 blue balloons. How many balloons are there in all?
  5. 5.Rohan has 11 flowers and gets 1 flower more. How many flowers does Rohan have now?
  6. 6.5 + 1 + 3 =
  7. 7.There are 3 pink balloons and 3 green balloons. How many balloons are there in all?
  8. 8.2 + 5 + 4 =
  9. 9.There are 6 red flowers and 7 green flowers. How many flowers are there in all?
  10. 10.There are 5 yellow balloons and 8 green balloons. How many balloons are there in all?
  11. 11.1 + 12 =
  12. 12.4 + 5 + 10 =
  13. 13.8 + 1 + 7 =
  14. 14.2 + 5 + 12 =
  15. 15.16 + 1 =
  16. 16.3 + ? = 8
  17. 17.4 + 14 =
  18. 18.14 + 5 =
  19. 19.There are 2 blue kites and 11 green kites. How many kites are there in all?
  20. 20.Isha has 4 marbles and gets 16 marbles more. How many marbles does Isha have now?
  21. 21.There are 10 yellow balloons and 10 white balloons. How many balloons are there in all?
  22. 22.2 + 8 + 4 =
  23. 23.? + 5 = 15
  24. 24.2 + 1 + 10 =
  25. 25.Joseph has 3 kites and gets 13 kites more. How many kites does Joseph have now?
  26. 26.Tara has 4 balls and gets 4 balls more. How many balls does Tara have now?
  27. 27.Dev has 5 balls and gets 2 balls more. How many balls does Dev have now?
  28. 28.2 + 6 =
  29. 29.There are 10 green crayons and 5 red crayons. How many crayons are there in all?
  30. 30.1 + ? = 7
  31. 31.Kavya has 6 balls and gets 6 balls more. How many balls does Kavya have now?
  32. 32.Kabir has 7 kites and gets 6 kites more. How many kites does Kabir have now?
  33. 33.There are 4 yellow balloons and 8 blue balloons. How many balloons are there in all?
  34. 34.6 + 2 + 2 =
  35. 35.4 + 3 =
  36. 36.7 + 2 + 6 =
  37. 37.Arjun has 13 mangoes and gets 7 mangoes more. How many mangoes does Arjun have now?
  38. 38.Rohan has 10 mangoes and gets 2 mangoes more. How many mangoes does Rohan have now?
  39. 39.5 + 7 =
  40. 40.14 + ? = 15

Answer key

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

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