Ratio and Proportion
Ten questions on ratio and proportion of the type you might find on a GCSE maths paper.
The proportion of something is its size in comparison to the size of another thing. For instance, if a cake had a mass of 1kg, and the fruit component was 300g, then the proportion of fruit to nonfruit would be 300:700 which would cancel down to 3:7.
An example of direct proportion would be that the number of apples is directly proportional to the number of boxes needed to store them. As one amount goes up, so does the other.
An example of inverse proportion would be that the faster you travel, the less time it takes to get there. As speed increases, the time needed to travel a fixed distance decreases.
Ten questions on ratio and proportion of the type you might find on a GCSE maths paper.
Reading scales and palcing numbers on a number line.
Direct and inverse proportion problems with answers.
Simple direct proportion video that lasts about 3 minutes where y is directly proportional to x. Find the constant of proportionality and then work out the problem from there.
Direct proportion video where y is directly proportional to x squared. Find the constant of proportionality and then work out the problem from there.
A problem where direct proportion is involved where y is directly proportional to x squared. Find the constant of proportionality and then work out the problem from there.
Direct and inverse proportion problems with answers. Same questions as The other Direct and Indirect Proportion sheet but with different numbers to give practice.
A couple of questions on ratio and best buy. There is a video on how to answer these questions so if you want to have a go and then watch the video, that might be useful.
A couple of questions on ratio and best buy.
Direct proportion problems.