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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 725 · 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. 1.7 + 3 + 7 =
  2. 2.There are 3 green crayons and 11 yellow crayons. How many crayons are there in all?
  3. 3.? + 1 = 5
  4. 4.2 + 5 + 4 =
  5. 5.8 + 8 + 4 =
  6. 6.? + 2 = 7
  7. 7.Rahul has 12 balls and gets 7 balls more. How many balls does Rahul have now?
  8. 8.Aarav has 15 balls and gets 5 balls more. How many balls does Aarav have now?
  9. 9.7 + ? = 8
  10. 10.Kabir has 7 balloons and gets 3 balloons more. How many balloons does Kabir have now?
  11. 11.There are 4 blue kites and 16 red kites. How many kites are there in all?
  12. 12.12 + 2 =
  13. 13.Isha has 6 marbles and gets 13 marbles more. How many marbles does Isha have now?
  14. 14.? + 14 = 17
  15. 15.2 + ? = 8
  16. 16.4 + 1 + 1 =
  17. 17.Karan has 14 balloons and gets 1 balloon more. How many balloons does Karan have now?
  18. 18.Zoya has 11 balloons and gets 7 balloons more. How many balloons does Zoya have now?
  19. 19.14 + 3 =
  20. 20.8 + 12 =
  21. 21.There are 5 red flowers and 11 green flowers. How many flowers are there in all?
  22. 22.Aditya has 3 shells and gets 2 shells more. How many shells does Aditya have now?
  23. 23.There are 9 blue crayons and 8 white crayons. How many crayons are there in all?
  24. 24.12 + 3 =
  25. 25.Sneha has 7 shells and gets 4 shells more. How many shells does Sneha have now?
  26. 26.There are 9 pink balloons and 4 yellow balloons. How many balloons are there in all?
  27. 27.3 + 1 + 14 =
  28. 28.6 + 1 + 11 =
  29. 29.19 + 1 =
  30. 30.11 + 5 =
  31. 31.2 + 3 =
  32. 32.1 + 7 + 1 =
  33. 33.Nisha has 6 mangoes and gets 1 mango more. How many mangoes does Nisha have now?
  34. 34.There are 11 red kites and 3 white kites. How many kites are there in all?
  35. 35.Arjun has 10 laddoos and gets 6 laddoos more. How many laddoos does Arjun have now?
  36. 36.4 + 1 + 4 =
  37. 37.There are 2 pink kites and 3 red kites. How many kites are there in all?
  38. 38.1 + 3 + 2 =
  39. 39.Nisha has 8 balloons and gets 8 balloons more. How many balloons does Nisha have now?
  40. 40.Priya has 4 bananas and gets 12 bananas more. How many bananas does Priya have now?

Answer key

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

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