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Question P5 Rate as an amount per unit

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Find units from an amount and rate

Ribbon costs $12 per metre. How many metres can be bought for $180?

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About this method

Rate as an amount per unit

Say both units aloud, then connect amount, rate and number of units.

In this one. When the amount and rate are known, divide the amount by the rate to find how many units fit.

Amount = rate × units1 hour45 km4 hours180 km

How to spot it

The word 'each' or 'per' next to a ticket, item, or hour marks this. The question asks for a total, or asks for the rate itself.

Common mistake

Children multiply when they should divide, especially when the question gives the total and the number of hours and asks for the rate per hour rather than a bigger total.

Practise a similar question

Standard A vehicle travels 350 km in 5 hours. Find its rate in kilometres per hour.
All 8 with this pattern →
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