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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 729 · 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. 1.9 + ? = 13
  2. 2.Manav has 7 bananas and gets 2 bananas more. How many bananas does Manav have now?
  3. 3.There are 11 pink balls and 7 red balls. How many balls are there in all?
  4. 4.There are 3 blue balls and 5 green balls. How many balls are there in all?
  5. 5.4 + 12 =
  6. 6.Ishaan has 7 mangoes and gets 3 mangoes more. How many mangoes does Ishaan have now?
  7. 7.There are 11 red balloons and 8 pink balloons. How many balloons are there in all?
  8. 8.9 + ? = 11
  9. 9.15 + 4 =
  10. 10.? + 19 = 20
  11. 11.8 + 3 + 3 =
  12. 12.2 + 2 + 5 =
  13. 13.There are 3 red flowers and 5 white flowers. How many flowers are there in all?
  14. 14.6 + 3 =
  15. 15.Kavya has 14 crayons and gets 6 crayons more. How many crayons does Kavya have now?
  16. 16.Karan has 15 kites and gets 2 kites more. How many kites does Karan have now?
  17. 17.5 + ? = 20
  18. 18.13 + 7 =
  19. 19.Farhan has 5 shells and gets 10 shells more. How many shells does Farhan have now?
  20. 20.Tara has 10 laddoos and gets 3 laddoos more. How many laddoos does Tara have now?
  21. 21.There are 6 green balls and 2 red balls. How many balls are there in all?
  22. 22.There are 11 red kites and 9 pink kites. How many kites are there in all?
  23. 23.Aarav has 6 crayons and gets 1 crayon more. How many crayons does Aarav have now?
  24. 24.Lakshmi has 5 mangoes and gets 1 mango more. How many mangoes does Lakshmi have now?
  25. 25.Dev has 5 kites and gets 6 kites more. How many kites does Dev have now?
  26. 26.4 + 6 + 7 =
  27. 27.Aditya has 7 marbles and gets 1 marble more. How many marbles does Aditya have now?
  28. 28.5 + 6 + 7 =
  29. 29.8 + 5 + 6 =
  30. 30.Ananya has 2 books and gets 7 books more. How many books does Ananya have now?
  31. 31.10 + 3 =
  32. 32.Lakshmi has 11 mangoes and gets 1 mango more. How many mangoes does Lakshmi have now?
  33. 33.There are 5 red balloons and 9 green balloons. How many balloons are there in all?
  34. 34.2 + ? = 14
  35. 35.9 + 10 =
  36. 36.There are 4 yellow beads and 12 white beads. How many beads are there in all?
  37. 37.There are 3 pink flowers and 13 green flowers. How many flowers are there in all?
  38. 38.6 + 11 =
  39. 39.6 + 10 =
  40. 40.6 + 1 =

Answer key

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

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