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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 144 · 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. 1.8 + 6 + 5 =
  2. 2.There are 11 red balloons and 3 green balloons. How many balloons are there in all?
  3. 3.? + 11 = 19
  4. 4.17 + 2 =
  5. 5.6 + 10 =
  6. 6.Aarav has 7 crayons and gets 11 crayons more. How many crayons does Aarav have now?
  7. 7.There are 2 white balls and 14 blue balls. How many balls are there in all?
  8. 8.5 + 1 + 9 =
  9. 9.6 + 1 + 3 =
  10. 10.8 + 11 =
  11. 11.3 + 4 + 2 =
  12. 12.Zoya has 4 mangoes and gets 12 mangoes more. How many mangoes does Zoya have now?
  13. 13.16 + 1 =
  14. 14.Gurpreet has 14 balls and gets 4 balls more. How many balls does Gurpreet have now?
  15. 15.Lakshmi has 3 laddoos and gets 14 laddoos more. How many laddoos does Lakshmi have now?
  16. 16.There are 8 white crayons and 6 red crayons. How many crayons are there in all?
  17. 17.4 + 8 + 8 =
  18. 18.2 + 11 =
  19. 19.9 + 6 =
  20. 20.2 + 3 + 10 =
  21. 21.? + 5 = 7
  22. 22.Arjun has 2 balloons and gets 8 balloons more. How many balloons does Arjun have now?
  23. 23.There are 2 green crayons and 15 blue crayons. How many crayons are there in all?
  24. 24.There are 7 pink balls and 10 red balls. How many balls are there in all?
  25. 25.1 + 2 =
  26. 26.4 + 5 + 6 =
  27. 27.Farhan has 15 kites and gets 1 kite more. How many kites does Farhan have now?
  28. 28.Rahul has 2 bananas and gets 8 bananas more. How many bananas does Rahul have now?
  29. 29.Zoya has 3 mangoes and gets 9 mangoes more. How many mangoes does Zoya have now?
  30. 30.4 + ? = 7
  31. 31.There are 3 blue flowers and 9 green flowers. How many flowers are there in all?
  32. 32.? + 2 = 6
  33. 33.2 + 4 + 13 =
  34. 34.4 + 1 + 4 =
  35. 35.2 + ? = 3
  36. 36.? + 1 = 17
  37. 37.16 + 2 =
  38. 38.19 + 1 =
  39. 39.Diya has 12 kites and gets 2 kites more. How many kites does Diya have now?
  40. 40.There are 6 white flowers and 2 red flowers. How many flowers are there in all?

Answer key

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

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