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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 822 · 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 9 white balloons and 10 blue balloons. How many balloons are there in all?
  2. 2.Isha has 2 shells and gets 18 shells more. How many shells does Isha have now?
  3. 3.1 + 1 + 18 =
  4. 4.8 + 1 =
  5. 5.7 + 11 =
  6. 6.3 + 6 + 4 =
  7. 7.There are 11 green balls and 4 blue balls. How many balls are there in all?
  8. 8.Zoya has 8 laddoos and gets 10 laddoos more. How many laddoos does Zoya have now?
  9. 9.There are 5 blue balloons and 4 yellow balloons. How many balloons are there in all?
  10. 10.There are 4 green balls and 15 pink balls. How many balls are there in all?
  11. 11.6 + 4 + 9 =
  12. 12.13 + ? = 17
  13. 13.There are 2 pink balloons and 5 green balloons. How many balloons are there in all?
  14. 14.1 + 1 + 4 =
  15. 15.16 + ? = 19
  16. 16.Priya has 2 flowers and gets 2 flowers more. How many flowers does Priya have now?
  17. 17.? + 13 = 16
  18. 18.Pooja has 6 bananas and gets 14 bananas more. How many bananas does Pooja have now?
  19. 19.Diya has 2 books and gets 2 books more. How many books does Diya have now?
  20. 20.7 + 12 =
  21. 21.? + 4 = 7
  22. 22.2 + 1 + 3 =
  23. 23.Nisha has 2 laddoos and gets 16 laddoos more. How many laddoos does Nisha have now?
  24. 24.Joseph has 12 crayons and gets 7 crayons more. How many crayons does Joseph have now?
  25. 25.Karan has 7 books and gets 3 books more. How many books does Karan have now?
  26. 26.? + 6 = 10
  27. 27.6 + ? = 7
  28. 28.Rohan has 3 mangoes and gets 9 mangoes more. How many mangoes does Rohan have now?
  29. 29.Sneha has 4 marbles and gets 8 marbles more. How many marbles does Sneha have now?
  30. 30.18 + ? = 19
  31. 31.Manav has 7 marbles and gets 10 marbles more. How many marbles does Manav have now?
  32. 32.7 + 6 + 4 =
  33. 33.Ananya has 12 books and gets 8 books more. How many books does Ananya have now?
  34. 34.There are 9 green flowers and 11 blue flowers. How many flowers are there in all?
  35. 35.1 + 2 + 2 =
  36. 36.There are 9 green crayons and 2 yellow crayons. How many crayons are there in all?
  37. 37.Manav has 14 books and gets 1 book more. How many books does Manav have now?
  38. 38.6 + 5 + 4 =
  39. 39.3 + 1 + 4 =
  40. 40.There are 4 pink balloons and 5 white balloons. How many balloons are there in all?

Answer key

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

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