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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 145 · 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 8 yellow crayons and 4 red crayons. How many crayons are there in all?
  2. 2.Priya has 4 balls and gets 4 balls more. How many balls does Priya have now?
  3. 3.There are 4 red crayons and 14 yellow crayons. How many crayons are there in all?
  4. 4.Kabir has 14 flowers and gets 2 flowers more. How many flowers does Kabir have now?
  5. 5.There are 6 blue kites and 12 red kites. How many kites are there in all?
  6. 6.Rahul has 2 balloons and gets 4 balloons more. How many balloons does Rahul have now?
  7. 7.7 + 2 + 7 =
  8. 8.? + 3 = 4
  9. 9.9 + 7 =
  10. 10.Dev has 11 balloons and gets 9 balloons more. How many balloons does Dev have now?
  11. 11.13 + 2 =
  12. 12.Isha has 15 books and gets 4 books more. How many books does Isha have now?
  13. 13.5 + 5 + 7 =
  14. 14.5 + 7 + 7 =
  15. 15.2 + 8 + 9 =
  16. 16.3 + ? = 7
  17. 17.5 + 13 =
  18. 18.1 + 10 =
  19. 19.18 + 1 =
  20. 20.Farhan has 6 pencils and gets 14 pencils more. How many pencils does Farhan have now?
  21. 21.1 + 1 + 4 =
  22. 22.There are 2 green balls and 2 red balls. How many balls are there in all?
  23. 23.There are 8 blue kites and 7 red kites. How many kites are there in all?
  24. 24.Karan has 3 pencils and gets 2 pencils more. How many pencils does Karan have now?
  25. 25.Farhan has 14 pencils and gets 6 pencils more. How many pencils does Farhan have now?
  26. 26.7 + 2 =
  27. 27.8 + 5 + 7 =
  28. 28.4 + 3 + 13 =
  29. 29.15 + 4 =
  30. 30.There are 10 green balls and 10 blue balls. How many balls are there in all?
  31. 31.1 + ? = 10
  32. 32.Nisha has 15 bananas and gets 3 bananas more. How many bananas does Nisha have now?
  33. 33.There are 11 yellow crayons and 9 white crayons. How many crayons are there in all?
  34. 34.7 + 9 =
  35. 35.17 + 1 =
  36. 36.There are 10 pink kites and 6 green kites. How many kites are there in all?
  37. 37.There are 6 pink beads and 4 green beads. How many beads are there in all?
  38. 38.There are 4 red balloons and 5 blue balloons. How many balloons are there in all?
  39. 39.? + 3 = 9
  40. 40.3 + 9 =

Answer key

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

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