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Ratios: find the total

Year 8 maths · Fieldbook Learning

Name ______________________ Date __________

Find what one part is worth, then multiply by the number of parts you need.

  1. The ratio of boys to girls is 7 : 2. There are 35 boys. How many boys and girls are there in all?
  2. The ratio of boys to girls is 1 : 8. There are 9 boys. How many boys and girls are there in all?
  3. The ratio of fiction books to non-fiction books is 8 : 9. There are 16 fiction books. How many fiction books and non-fiction books are there in all?
  4. The ratio of apples to oranges is 9 : 2. There are 72 apples. How many apples and oranges are there in all?
  5. The ratio of red marbles to blue marbles is 10 : 5. There are 40 red marbles. How many red marbles and blue marbles are there in all?
  6. The ratio of cats to dogs is 6 : 8. There are 66 cats. How many cats and dogs are there in all?
  7. The ratio of fiction books to non-fiction books is 11 : 4. There are 121 fiction books. How many fiction books and non-fiction books are there in all?
  8. The ratio of red marbles to blue marbles is 8 : 9. There are 96 red marbles. How many red marbles and blue marbles are there in all?
  9. The ratio of boys to girls is 15 : 16. There are 225 boys. How many boys and girls are there in all?
  10. The ratio of apples to oranges is 2 : 3. There are 6 apples. How many apples and oranges are there in all?
  11. The ratio of cats to dogs is 9 : 10. There are 45 cats. How many cats and dogs are there in all?
  12. The ratio of cats to dogs is 9 : 1. There are 45 cats. How many cats and dogs are there in all?
  13. The ratio of apples to oranges is 19 : 4. There are 285 apples. How many apples and oranges are there in all?
  14. The ratio of boys to girls is 11 : 12. There are 66 boys. How many boys and girls are there in all?
  15. The ratio of boys to girls is 11 : 15. There are 33 boys. How many boys and girls are there in all?
  16. The ratio of cats to dogs is 5 : 19. There are 30 cats. How many cats and dogs are there in all?
  17. The ratio of fiction books to non-fiction books is 6 : 4. There are 168 fiction books. How many fiction books and non-fiction books are there in all?
  18. The ratio of red marbles to blue marbles is 23 : 19. There are 667 red marbles. How many red marbles and blue marbles are there in all?
  19. The ratio of cats to dogs is 26 : 2. There are 52 cats. How many cats and dogs are there in all?
  20. The ratio of red marbles to blue marbles is 8 : 12. There are 176 red marbles. How many red marbles and blue marbles are there in all?
More free practice: fieldbooklearning.com/uk/practice/year-8/ratios-find-the-total/

Play it as a quiz game

13 of these questions as multiple choice, with near-miss wrong answers, ready for Kahoot or Blooket.

  1. Download the game's own question template: in Kahoot, Add question → Import spreadsheet; in Blooket, Create a set → Spreadsheet import.
  2. Click the matching button below, then click the first empty question row of the template and paste.
  3. Save the template (Kahoot needs .xlsx, Blooket .csv) and upload it.
Download CSV

Answer key: Ratios: find the total

  1. 45
  2. 81
  3. 34
  4. 88
  5. 60
  6. 154
  7. 165
  8. 204
  9. 465
  10. 15
  11. 95
  12. 50
  13. 345
  14. 138
  15. 78
  16. 144
  17. 280
  18. 1218
  19. 56
  20. 440