Science, Maths & Technology

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Ratio, proportion and percentages

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# 1.4.1 Try some yourself

## Activity 5

Convert each of the following fraction ratios to decimal ratios.

• (a)

• (b)

• (c)

• (d)

• (a) = 0.2

• (b) = 0.3333 ... this repeats indefinitely. As a decimal, you need to terminate after some finite number of places, e.g. 0.3333 to four decimal places.

• (c) = 1.5

• (d) = 2.25

Alternatively, 2 is 2.00, is 0.25, and adding them together gives 2.25.

## Activity 6

Convert each of the following decimal ratios to fraction ratios.

• (a) 0.25

• (b) 1.135

• (c) 0.064

• (a) 0.25 =

• (b)1.135 =

• (c)0.064 =

## Activity 7

A recipe for a casserole involves soaking dried beans. The beans require litres of water per kilogram of beans. If you have kilograms of beans, how much water is required?