Question P6 Units and parts
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Devi, Eric and Haziq had a total of $1560 at first. Devi donated of her money, Eric donated of his money and Haziq donated of his money. Devi and Eric donated the same amount. Haziq donated 3 times as much as Eric.
Answer
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Cut one amount into equal shares. One number tells you what a share is worth.
In this one. The three donations are stated only in terms of each other, so make the donation the unit rather than the money — each person's money then reads straight off their own fraction (4u, 3½u, 7½u), and the 15 units are the $1560.
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.
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