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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 782 · 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. 1.4 + 8 + 7 =
  2. 2.3 + 3 =
  3. 3.5 + ? = 15
  4. 4.There are 5 blue balls and 4 pink balls. How many balls are there in all?
  5. 5.Lakshmi has 12 kites and gets 8 kites more. How many kites does Lakshmi have now?
  6. 6.6 + 8 + 1 =
  7. 7.Manav has 7 kites and gets 6 kites more. How many kites does Manav have now?
  8. 8.There are 11 blue crayons and 6 white crayons. How many crayons are there in all?
  9. 9.There are 10 green balls and 6 pink balls. How many balls are there in all?
  10. 10.8 + 6 + 1 =
  11. 11.15 + 1 =
  12. 12.2 + 5 + 8 =
  13. 13.18 + 2 =
  14. 14.Rohan has 11 bananas and gets 5 bananas more. How many bananas does Rohan have now?
  15. 15.There are 8 white crayons and 2 blue crayons. How many crayons are there in all?
  16. 16.5 + ? = 17
  17. 17.3 + 6 + 7 =
  18. 18.There are 4 red balloons and 13 white balloons. How many balloons are there in all?
  19. 19.4 + 4 + 5 =
  20. 20.2 + 6 + 5 =
  21. 21.Ishaan has 5 marbles and gets 5 marbles more. How many marbles does Ishaan have now?
  22. 22.Dev has 2 balls and gets 1 ball more. How many balls does Dev have now?
  23. 23.Meera has 6 balloons and gets 13 balloons more. How many balloons does Meera have now?
  24. 24.17 + 3 =
  25. 25.13 + 3 =
  26. 26.4 + ? = 19
  27. 27.? + 1 = 7
  28. 28.There are 3 blue flowers and 15 white flowers. How many flowers are there in all?
  29. 29.Isha has 4 mangoes and gets 11 mangoes more. How many mangoes does Isha have now?
  30. 30.There are 7 white beads and 13 yellow beads. How many beads are there in all?
  31. 31.3 + 3 + 1 =
  32. 32.5 + 15 =
  33. 33.Manav has 6 balls and gets 6 balls more. How many balls does Manav have now?
  34. 34.There are 8 green crayons and 11 white crayons. How many crayons are there in all?
  35. 35.8 + 5 =
  36. 36.2 + 12 =
  37. 37.Karan has 12 laddoos and gets 2 laddoos more. How many laddoos does Karan have now?
  38. 38.Lakshmi has 9 bananas and gets 10 bananas more. How many bananas does Lakshmi have now?
  39. 39.Aditya has 4 books and gets 14 books more. How many books does Aditya have now?
  40. 40.2 + 1 + 5 =

Answer key

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

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