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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 28 · 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 3 green balls and 5 white balls. How many balls are there in all?
  2. 2.Priya has 8 laddoos and gets 8 laddoos more. How many laddoos does Priya have now?
  3. 3.Dev has 2 crayons and gets 15 crayons more. How many crayons does Dev have now?
  4. 4.5 + 4 + 2 =
  5. 5.7 + 4 + 6 =
  6. 6.There are 2 green crayons and 8 white crayons. How many crayons are there in all?
  7. 7.18 + 2 =
  8. 8.3 + ? = 7
  9. 9.3 + ? = 14
  10. 10.? + 5 = 8
  11. 11.There are 9 green balloons and 9 pink balloons. How many balloons are there in all?
  12. 12.There are 5 yellow balloons and 2 pink balloons. How many balloons are there in all?
  13. 13.4 + 5 + 2 =
  14. 14.5 + 3 =
  15. 15.15 + 2 =
  16. 16.15 + ? = 18
  17. 17.There are 8 white balloons and 5 blue balloons. How many balloons are there in all?
  18. 18.There are 7 green flowers and 3 yellow flowers. How many flowers are there in all?
  19. 19.Saanvi has 5 marbles and gets 13 marbles more. How many marbles does Saanvi have now?
  20. 20.There are 2 pink balls and 5 red balls. How many balls are there in all?
  21. 21.Aditya has 13 balls and gets 1 ball more. How many balls does Aditya have now?
  22. 22.Pooja has 12 flowers and gets 8 flowers more. How many flowers does Pooja have now?
  23. 23.Saanvi has 14 books and gets 6 books more. How many books does Saanvi have now?
  24. 24.1 + 8 + 10 =
  25. 25.? + 3 = 5
  26. 26.8 + 6 + 2 =
  27. 27.There are 6 pink balloons and 3 green balloons. How many balloons are there in all?
  28. 28.There are 4 red flowers and 11 yellow flowers. How many flowers are there in all?
  29. 29.16 + 2 =
  30. 30.5 + 1 + 7 =
  31. 31.1 + 3 + 4 =
  32. 32.15 + ? = 17
  33. 33.There are 10 yellow beads and 4 green beads. How many beads are there in all?
  34. 34.18 + 1 =
  35. 35.Lakshmi has 11 pencils and gets 9 pencils more. How many pencils does Lakshmi have now?
  36. 36.7 + 6 + 5 =
  37. 37.Lakshmi has 12 bananas and gets 5 bananas more. How many bananas does Lakshmi have now?
  38. 38.Ananya has 2 books and gets 2 books more. How many books does Ananya have now?
  39. 39.? + 12 = 16
  40. 40.2 + 7 =

Answer key

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

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