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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 113 · 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.There are 6 red kites and 14 blue kites. How many kites are there in all?
  2. 2.6 + 8 + 2 =
  3. 3.5 + 6 =
  4. 4.Saanvi has 3 balloons and gets 1 balloon more. How many balloons does Saanvi have now?
  5. 5.There are 8 green balls and 9 red balls. How many balls are there in all?
  6. 6.There are 3 blue crayons and 9 white crayons. How many crayons are there in all?
  7. 7.Zoya has 14 bananas and gets 1 banana more. How many bananas does Zoya have now?
  8. 8.Pooja has 10 books and gets 1 book more. How many books does Pooja have now?
  9. 9.? + 3 = 14
  10. 10.There are 8 yellow balls and 9 pink balls. How many balls are there in all?
  11. 11.There are 5 white balls and 6 blue balls. How many balls are there in all?
  12. 12.7 + ? = 20
  13. 13.4 + 13 =
  14. 14.There are 3 red crayons and 5 green crayons. How many crayons are there in all?
  15. 15.There are 4 blue balloons and 10 red balloons. How many balloons are there in all?
  16. 16.5 + 7 + 1 =
  17. 17.1 + 7 + 6 =
  18. 18.There are 7 red balloons and 2 pink balloons. How many balloons are there in all?
  19. 19.? + 1 = 3
  20. 20.There are 6 blue balloons and 6 red balloons. How many balloons are there in all?
  21. 21.? + 5 = 8
  22. 22.1 + 3 + 13 =
  23. 23.Ananya has 7 pencils and gets 10 pencils more. How many pencils does Ananya have now?
  24. 24.2 + 15 =
  25. 25.4 + 7 + 8 =
  26. 26.Kavya has 5 balloons and gets 4 balloons more. How many balloons does Kavya have now?
  27. 27.Aditya has 11 flowers and gets 5 flowers more. How many flowers does Aditya have now?
  28. 28.? + 16 = 18
  29. 29.6 + 4 + 6 =
  30. 30.8 + 8 =
  31. 31.Arjun has 6 mangoes and gets 7 mangoes more. How many mangoes does Arjun have now?
  32. 32.7 + 3 + 10 =
  33. 33.Ishaan has 7 laddoos and gets 7 laddoos more. How many laddoos does Ishaan have now?
  34. 34.Lakshmi has 14 kites and gets 2 kites more. How many kites does Lakshmi have now?
  35. 35.There are 12 red flowers and 3 blue flowers. How many flowers are there in all?
  36. 36.There are 8 yellow balloons and 10 white balloons. How many balloons are there in all?
  37. 37.1 + ? = 3
  38. 38.? + 2 = 6
  39. 39.1 + 7 + 9 =
  40. 40.There are 2 red flowers and 5 blue flowers. How many flowers are there in all?

Answer key

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

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