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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 90 · 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 + ? = 19
  2. 2.10 + 3 =
  3. 3.There are 11 red kites and 3 yellow kites. How many kites are there in all?
  4. 4.Tara has 2 laddoos and gets 5 laddoos more. How many laddoos does Tara have now?
  5. 5.Priya has 2 marbles and gets 15 marbles more. How many marbles does Priya have now?
  6. 6.There are 10 pink kites and 4 white kites. How many kites are there in all?
  7. 7.6 + ? = 7
  8. 8.1 + 6 =
  9. 9.? + 3 = 13
  10. 10.? + 8 = 15
  11. 11.There are 9 blue balloons and 10 white balloons. How many balloons are there in all?
  12. 12.? + 7 = 16
  13. 13.Joseph has 6 mangoes and gets 2 mangoes more. How many mangoes does Joseph have now?
  14. 14.8 + ? = 20
  15. 15.2 + ? = 6
  16. 16.17 + 1 =
  17. 17.2 + 1 + 13 =
  18. 18.Saanvi has 15 kites and gets 5 kites more. How many kites does Saanvi have now?
  19. 19.There are 4 red kites and 14 blue kites. How many kites are there in all?
  20. 20.4 + 4 + 2 =
  21. 21.4 + 8 + 6 =
  22. 22.There are 4 green kites and 5 white kites. How many kites are there in all?
  23. 23.There are 4 red balls and 9 yellow balls. How many balls are there in all?
  24. 24.? + 3 = 4
  25. 25.15 + 4 =
  26. 26.17 + 3 =
  27. 27.There are 4 yellow kites and 4 white kites. How many kites are there in all?
  28. 28.6 + 6 + 2 =
  29. 29.? + 6 = 10
  30. 30.8 + 1 + 2 =
  31. 31.3 + 3 + 3 =
  32. 32.There are 6 white beads and 7 yellow beads. How many beads are there in all?
  33. 33.13 + 5 =
  34. 34.? + 7 = 9
  35. 35.Sneha has 4 balloons and gets 14 balloons more. How many balloons does Sneha have now?
  36. 36.There are 6 blue beads and 5 white beads. How many beads are there in all?
  37. 37.1 + 6 + 9 =
  38. 38.There are 11 green flowers and 2 yellow flowers. How many flowers are there in all?
  39. 39.There are 3 yellow flowers and 12 green flowers. How many flowers are there in all?
  40. 40.14 + 3 =

Answer key

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

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