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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 624 · 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.? + 6 = 9
  2. 2.6 + 3 + 8 =
  3. 3.Isha has 7 bananas and gets 3 bananas more. How many bananas does Isha have now?
  4. 4.15 + 1 =
  5. 5.There are 9 pink flowers and 9 green flowers. How many flowers are there in all?
  6. 6.Dev has 15 balloons and gets 5 balloons more. How many balloons does Dev have now?
  7. 7.3 + 14 =
  8. 8.1 + 3 + 15 =
  9. 9.Pooja has 6 pencils and gets 2 pencils more. How many pencils does Pooja have now?
  10. 10.There are 10 white crayons and 2 pink crayons. How many crayons are there in all?
  11. 11.Arjun has 14 laddoos and gets 6 laddoos more. How many laddoos does Arjun have now?
  12. 12.6 + 14 =
  13. 13.7 + 1 =
  14. 14.There are 2 white kites and 15 green kites. How many kites are there in all?
  15. 15.18 + 2 =
  16. 16.1 + ? = 3
  17. 17.15 + 3 =
  18. 18.10 + ? = 12
  19. 19.There are 2 green flowers and 6 yellow flowers. How many flowers are there in all?
  20. 20.3 + ? = 4
  21. 21.Priya has 6 kites and gets 4 kites more. How many kites does Priya have now?
  22. 22.Kabir has 5 flowers and gets 11 flowers more. How many flowers does Kabir have now?
  23. 23.5 + 5 =
  24. 24.1 + ? = 19
  25. 25.1 + 9 =
  26. 26.3 + 16 =
  27. 27.13 + 1 =
  28. 28.2 + 8 + 5 =
  29. 29.Kabir has 14 mangoes and gets 5 mangoes more. How many mangoes does Kabir have now?
  30. 30.7 + 2 =
  31. 31.There are 2 yellow flowers and 8 white flowers. How many flowers are there in all?
  32. 32.3 + ? = 9
  33. 33.Aarav has 6 marbles and gets 8 marbles more. How many marbles does Aarav have now?
  34. 34.8 + 8 + 1 =
  35. 35.3 + ? = 20
  36. 36.Karan has 9 balls and gets 8 balls more. How many balls does Karan have now?
  37. 37.13 + 5 =
  38. 38.Meera has 15 flowers and gets 5 flowers more. How many flowers does Meera have now?
  39. 39.6 + ? = 13
  40. 40.1 + 11 =

Answer key

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

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