Question P6 Units and parts
Today’s problem — free all day, every step. Every day has one.
A pie chart shows that 25% of students chose Science as their favourite subject. If 60 students chose Science, how many students were surveyed in total?
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Cut one amount into equal shares. One number tells you what a share is worth.
In this one. A slice of a pie chart is a fraction of the whole, so 25% names one quarter — and the whole is 4 of those quarters.
A single amount is split by a ratio, a fraction or a percentage. One extra number gives you the leftover, the difference, or the value of one share.
Children match the given number to the wrong number of shares, using the whole bar when the number covers only the leftover or the difference between two people's shares.
Worked examples of all 33 patterns and skills, in a booklet you can print.