Explain how to convert a fraction to a percentage.

To convert a fraction to a percentage, multiply the fraction by 100 and add the percentage symbol.

When you have a fraction, it represents a part of a whole. To express this part as a percentage, you need to find out how many parts out of 100 it represents. This is done by multiplying the fraction by 100. For example, if you have the fraction 3/4, you multiply 3/4 by 100.

Here's the step-by-step process:
1. Take the fraction you want to convert. Let's use 3/4 as an example.
2. Multiply the numerator (the top number) by 100. So, 3 multiplied by 100 equals 300.
3. Divide the result by the denominator (the bottom number). So, 300 divided by 4 equals 75.
4. Add the percentage symbol (%) to the result. Therefore, 3/4 as a percentage is 75%.

This method works for any fraction. If you have a fraction like 1/5, you would multiply 1 by 100 to get 100, and then divide by 5 to get 20. So, 1/5 is 20%.

Remember, multiplying by 100 shifts the decimal point two places to the right, converting the fraction into a percentage. This is a handy trick to keep in mind when working with fractions and percentages in your GCSE Maths exams.