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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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The pattern behind it: 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.
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.
Try one like it
Standard Find a rate A vehicle travels 350 km in 5 hours. Find its rate in kilometres per hour.The 33 problem patterns
All 33 patterns, one to a page — the 19 behind Primary 5 and 6 word problems, and the skills the younger years are built on. The bar model, how to spot it in the question, and the mistake children make. A booklet you can print. Free.
A PDF, and a note when new solutions go up.