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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 732 · 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.? + 18 = 20
  2. 2.1 + 11 =
  3. 3.There are 10 blue beads and 3 green beads. How many beads are there in all?
  4. 4.Diya has 6 flowers and gets 14 flowers more. How many flowers does Diya have now?
  5. 5.13 + 4 =
  6. 6.5 + ? = 8
  7. 7.There are 2 blue kites and 6 green kites. How many kites are there in all?
  8. 8.14 + 3 =
  9. 9.There are 10 green beads and 6 pink beads. How many beads are there in all?
  10. 10.3 + 4 =
  11. 11.2 + ? = 4
  12. 12.Arjun has 12 laddoos and gets 6 laddoos more. How many laddoos does Arjun have now?
  13. 13.Joseph has 8 mangoes and gets 10 mangoes more. How many mangoes does Joseph have now?
  14. 14.Gurpreet has 4 crayons and gets 14 crayons more. How many crayons does Gurpreet have now?
  15. 15.6 + 5 + 5 =
  16. 16.Isha has 12 balloons and gets 4 balloons more. How many balloons does Isha have now?
  17. 17.Rahul has 8 mangoes and gets 11 mangoes more. How many mangoes does Rahul have now?
  18. 18.17 + 3 =
  19. 19.There are 10 yellow flowers and 2 red flowers. How many flowers are there in all?
  20. 20.? + 10 = 15
  21. 21.3 + ? = 5
  22. 22.2 + 7 =
  23. 23.6 + 5 =
  24. 24.1 + ? = 10
  25. 25.4 + 1 =
  26. 26.There are 9 red flowers and 10 green flowers. How many flowers are there in all?
  27. 27.11 + 8 =
  28. 28.There are 4 pink flowers and 5 blue flowers. How many flowers are there in all?
  29. 29.Joseph has 5 books and gets 12 books more. How many books does Joseph have now?
  30. 30.2 + 4 =
  31. 31.6 + ? = 8
  32. 32.2 + ? = 3
  33. 33.There are 4 blue crayons and 2 red crayons. How many crayons are there in all?
  34. 34.There are 5 red balls and 10 blue balls. How many balls are there in all?
  35. 35.There are 5 red balloons and 2 blue balloons. How many balloons are there in all?
  36. 36.16 + ? = 20
  37. 37.There are 5 pink balloons and 8 yellow balloons. How many balloons are there in all?
  38. 38.4 + ? = 17
  39. 39.Tara has 5 bananas and gets 11 bananas more. How many bananas does Tara have now?
  40. 40.8 + 2 =

Answer key

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

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