Ratios are an important part of the Eleven Plus maths exam and you will need to understand them if you want to do well. But you’ve come to the right place if you need more practice. This is the second quiz in our Difficult section on ratios.
We use ratios in a similar way to fractions. Both are ways to represent parts or portions of a larger number. For example, let’s say that John has 3 sweets and Jill has 2. We could show this as the ratio 3:2 or as the fractions 3⁄5 and 2⁄5. That’s because there are 5 sweets altogether. John has 3 of them and Jill has 2.
I hope that makes things clear. If not, don’t worry – you’ll get plenty of opportunity to practice in this quiz, and our others of ratios. Keep trying until you get all the questions right. Good luck!
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8 + 2 + 3 = 13 ? the fractional parts are as follows: TVs, 8?13 × 650 = 400; microwaves, 2?13 × 650 = 100; fridges, 3?13 × 650 = 150
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7 + 4 + 11 = 22 which becomes the denominator in the fractional parts
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3 + 18 = 21. This can be simplified by dividing by three to 1 + 6 = 7 which becomes the denominator in the fractional parts. Always try to simplify if it is possible
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1.5:2:1.2 = 15:20:12 (multiplying by 10). You need to find a number to multiply by which will make 1.5 and 1.2 into whole numbers
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2.5:1.25:7 = 10:5:28 (multiply by 4)
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4 + 3 + 7 = 14 ? the fractional parts are as follows:
Andrew, 4?14 × £700 = £200; Beatrice, 3?14 × £700 = £150; Clair, 7?14× £700 = £350 |
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12:10:12 can be simplified by dividing by two to make 6:5:6. This ratio adds up to 17 so that is the number of sweets each child received
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4:1.2 = 20:6 (multiply by 5). This can be simplified to 10:3 by dividing by two
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A:B:C: = 44:68:76 = 11:17:19 (dividing by 4)
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5 + 9 + 3 = 17 which becomes the denominator in the fractional parts
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