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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 447 · 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.Kabir has 4 laddoos and gets 8 laddoos more. How many laddoos does Kabir have now?
  2. 2.? + 2 = 8
  3. 3.There are 3 blue flowers and 2 white flowers. How many flowers are there in all?
  4. 4.1 + 13 =
  5. 5.1 + ? = 7
  6. 6.12 + ? = 20
  7. 7.7 + 3 + 2 =
  8. 8.? + 5 = 9
  9. 9.There are 5 pink crayons and 10 blue crayons. How many crayons are there in all?
  10. 10.There are 4 yellow crayons and 16 red crayons. How many crayons are there in all?
  11. 11.17 + 2 =
  12. 12.9 + 8 =
  13. 13.4 + 5 + 2 =
  14. 14.4 + ? = 10
  15. 15.There are 2 white kites and 16 red kites. How many kites are there in all?
  16. 16.3 + 6 =
  17. 17.1 + 1 =
  18. 18.11 + 2 =
  19. 19.1 + 3 + 7 =
  20. 20.Isha has 6 crayons and gets 4 crayons more. How many crayons does Isha have now?
  21. 21.10 + 6 =
  22. 22.There are 5 yellow balloons and 11 blue balloons. How many balloons are there in all?
  23. 23.6 + 7 + 1 =
  24. 24.15 + 2 =
  25. 25.Gurpreet has 5 balls and gets 7 balls more. How many balls does Gurpreet have now?
  26. 26.There are 5 green balloons and 2 pink balloons. How many balloons are there in all?
  27. 27.There are 2 white balloons and 11 green balloons. How many balloons are there in all?
  28. 28.2 + ? = 5
  29. 29.Aditya has 11 bananas and gets 9 bananas more. How many bananas does Aditya have now?
  30. 30.6 + 4 + 9 =
  31. 31.There are 10 blue flowers and 2 yellow flowers. How many flowers are there in all?
  32. 32.Vivaan has 9 books and gets 5 books more. How many books does Vivaan have now?
  33. 33.Farhan has 5 mangoes and gets 10 mangoes more. How many mangoes does Farhan have now?
  34. 34.There are 2 green balls and 4 yellow balls. How many balls are there in all?
  35. 35.Gurpreet has 7 kites and gets 1 kite more. How many kites does Gurpreet have now?
  36. 36.17 + 3 =
  37. 37.Aditya has 8 books and gets 12 books more. How many books does Aditya have now?
  38. 38.There are 10 red balloons and 5 pink balloons. How many balloons are there in all?
  39. 39.Ananya has 14 kites and gets 2 kites more. How many kites does Ananya have now?
  40. 40.Rahul has 6 balls and gets 3 balls more. How many balls does Rahul have now?

Answer key

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

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