Extended Number Lecture 2 2016b.pdf

# Extended Number Lecture 2 2016b.pdf - and Health...

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and Health, Counselling and Disability Service Flinders University 8201 2118 [email protected]

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But rates are not ALWAYS unit rates 800km on a 60 litre tank of petrol Express this as litres per 100km (the Australian standard)

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But rates are not ALWAYS unit rates 800km on a 60 litre tank of petrol Express this as litres per 100km (the Australian standard) 7.5 L / 100 km What is this in American (mpg)? Assume 1.5 km in a mile and 4.5 litres in a gallon
Proportions Proportions identify equal ratios What do we mean when we say a model is in proportion to the original object? 30 40 3 4 30 4

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To check if two things are proportional…. Write the ratios as fractions and put an equals sign between them and see if it makes a true statement e.g. On the left fraction, divide top and bottom by ten and it is clear that the statement

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