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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 307 · 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.Sneha has 2 pencils and gets 17 pencils more. How many pencils does Sneha have now?
  2. 2.14 + ? = 15
  3. 3.? + 8 = 15
  4. 4.There are 4 pink balloons and 11 red balloons. How many balloons are there in all?
  5. 5.2 + 7 + 7 =
  6. 6.4 + 1 + 13 =
  7. 7.3 + 3 + 3 =
  8. 8.There are 6 blue crayons and 5 white crayons. How many crayons are there in all?
  9. 9.Rahul has 3 books and gets 15 books more. How many books does Rahul have now?
  10. 10.There are 3 yellow balloons and 6 blue balloons. How many balloons are there in all?
  11. 11.8 + 11 =
  12. 12.Gurpreet has 7 marbles and gets 12 marbles more. How many marbles does Gurpreet have now?
  13. 13.1 + 8 + 9 =
  14. 14.Meera has 2 balls and gets 3 balls more. How many balls does Meera have now?
  15. 15.There are 6 green kites and 12 pink kites. How many kites are there in all?
  16. 16.3 + 5 + 11 =
  17. 17.8 + 3 + 7 =
  18. 18.16 + 3 =
  19. 19.? + 1 = 10
  20. 20.5 + 3 + 12 =
  21. 21.1 + 4 + 14 =
  22. 22.There are 6 red balls and 5 blue balls. How many balls are there in all?
  23. 23.1 + 6 =
  24. 24.There are 10 pink crayons and 4 red crayons. How many crayons are there in all?
  25. 25.There are 2 yellow crayons and 2 red crayons. How many crayons are there in all?
  26. 26.5 + 6 =
  27. 27.There are 9 red flowers and 5 pink flowers. How many flowers are there in all?
  28. 28.There are 3 blue kites and 7 yellow kites. How many kites are there in all?
  29. 29.4 + 9 =
  30. 30.4 + ? = 5
  31. 31.Saanvi has 2 marbles and gets 7 marbles more. How many marbles does Saanvi have now?
  32. 32.15 + ? = 20
  33. 33.1 + 2 + 10 =
  34. 34.4 + 4 + 1 =
  35. 35.8 + 1 + 6 =
  36. 36.? + 3 = 15
  37. 37.Zoya has 8 mangoes and gets 7 mangoes more. How many mangoes does Zoya have now?
  38. 38.5 + 2 + 9 =
  39. 39.13 + 1 =
  40. 40.18 + 2 =

Answer key

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

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