Question #df029

3 Answers
Sep 18, 2017

6/8 is 0.75. It is 75%

Explanation:

68=0.75 by using a calculator or paper and pen calculation

0.75 is 75%.

0.75 and 75%.

Explanation:

What I would normally do when I see these types of questions is to simplify the fraction.

The greatest common divisor of 6 and 8 is 2, so we can do this: 6÷28÷2 which is equal to 34.

Now, we will convert 34 to a decimal. We need to find a number that is divisible by 4 and is a number with zeroes at the back etc. (10,100,1000)

The closest number would be 100 so we will change the denominator of 34 into 100.

100÷4=25 We will multiply the numerator and denominator by 25.

3×254×25=75100.

75100 is the same as 0.75 which is the same as 75%.

Sep 18, 2017

If you can, it is always useful to memorise some of the fraction to decimal conversions. You could get these in an exam. Some of the more common ones are listed in the solution.

Explanation:

18=0.125

So if you needed 38 you would have 3×0.125

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So 116=12×18=12×0.125

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14=0.25

So 34=3×14=3×0.25

Also 18=12×14=12×0.25

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12=0.5

These are a good starting point.