Help your students prepare for their Maths GCSE with this free ratio word problem worksheet of 44 questions and answers
Ratios can be written as part to part or part to whole. This varied interpretation is necessary when solving worded problems.
Dividing a quantity by a given ratio:
The quantity is divided by the total sum of the parts of the ratio and then multiplied by each required part within the ratio.
Fraction word problems (and percents):
For the part to part ratio A:B, the fraction of the ratio that is A is equal to A (the numerator) divided by A+B (the denominator); the part to whole ratio A:C would be expressed as the fraction A divided by C. To convert the fraction to a percentage, we determine the equivalent fraction where the denominator is equal to 100.
Simplifying and equivalent ratios:
We can simplify ratios by dividing each part of the ratio by a common factor. Writing ratios in their simplest form makes it easier to visualise the relationship between the quantities in the ratios. It also makes it easier to use the ratios. Just as we can simplify ratios by dividing each part by a common factor, we can find other equivalent ratios by multiplying each part by a common number. We can use equivalent ratios to solve problems.
Ratio and proportion word problems:
Ratio word problems may ask us to write a ratio, simplify a ratio, divide a quantity into a ratio or use a ratio to find quantities. We can use a bar model to represent a given ratio and this can help us visualise the ratio problem more easily.
Rate word problems:
Writing a ratio in the form 1:n allows us to compare two quantities and determine their unit rate. This could be a currency conversion, the price per litre of fuel, or the speed of an object (compound measures).
You will find free worksheets with real life problems and exam style questions for each topic. Each math worksheet is accompanied by an answer key.
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