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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 620 · 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 + 17 =
  2. 2.Riya has 9 laddoos and gets 5 laddoos more. How many laddoos does Riya have now?
  3. 3.Kavya has 12 bananas and gets 6 bananas more. How many bananas does Kavya have now?
  4. 4.3 + ? = 10
  5. 5.1 + 3 =
  6. 6.1 + ? = 5
  7. 7.7 + 6 + 6 =
  8. 8.? + 12 = 16
  9. 9.There are 5 blue crayons and 8 pink crayons. How many crayons are there in all?
  10. 10.15 + 2 =
  11. 11.Manav has 7 flowers and gets 4 flowers more. How many flowers does Manav have now?
  12. 12.19 + 1 =
  13. 13.2 + 5 + 10 =
  14. 14.8 + 8 + 2 =
  15. 15.Farhan has 6 mangoes and gets 1 mango more. How many mangoes does Farhan have now?
  16. 16.7 + ? = 10
  17. 17.8 + 5 =
  18. 18.1 + 3 + 12 =
  19. 19.? + 5 = 10
  20. 20.1 + 4 + 5 =
  21. 21.17 + 3 =
  22. 22.5 + 3 + 5 =
  23. 23.There are 4 pink balls and 8 yellow balls. How many balls are there in all?
  24. 24.There are 4 yellow balloons and 4 blue balloons. How many balloons are there in all?
  25. 25.There are 8 green flowers and 10 yellow flowers. How many flowers are there in all?
  26. 26.There are 3 red balloons and 11 blue balloons. How many balloons are there in all?
  27. 27.3 + ? = 11
  28. 28.1 + 1 + 12 =
  29. 29.2 + ? = 8
  30. 30.There are 7 red kites and 10 white kites. How many kites are there in all?
  31. 31.8 + 11 =
  32. 32.Pooja has 15 laddoos and gets 1 laddoo more. How many laddoos does Pooja have now?
  33. 33.? + 3 = 6
  34. 34.There are 11 red crayons and 8 blue crayons. How many crayons are there in all?
  35. 35.1 + 6 + 3 =
  36. 36.1 + 5 + 6 =
  37. 37.There are 7 yellow balls and 11 green balls. How many balls are there in all?
  38. 38.7 + 5 + 5 =
  39. 39.Kavya has 11 kites and gets 9 kites more. How many kites does Kavya have now?
  40. 40.2 + 5 + 9 =

Answer key

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

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