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Question 1 of 4
Identify which of the following are scales
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A rate is a ratio of two different units.
A baking recipe using three parts water and two parts flours
This can also be written as 3:2.
Therefore, this is a ratio.
Price of oranges per kilogram
This is a ratio between two different units.
Therefore, this is a rate.
Using a map
A map is a smaller representation of an actual larger location.
Therefore, this is a scale.
Creating a building plan
Building plans are sketches of an actual larger building.
Therefore, this is a scale.
Therefore, Using a map and Creating a building plan are both scales.
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Question 2 of 4
Find the ratio of the scale 1 cm:1 m using cm as the unit
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A scale is the ratio of the size of a model to the actual object it represents.
First, convert the metres into centimetres.
| 1 metre |
= |
100 centimetres |
This ratio is already simplified.
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Question 3 of 4
Find the ratio of the scale 1 cm:5 m using cm as the unit
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A scale is the ratio of the size of a model to the actual object it represents.
First, convert the metres into centimetres.
| 1 metre |
= |
100 centimetres |
This ratio is already simplified.
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Question 4 of 4
Find the ratio of the scale 1 mm:1 km using mm as the unit
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A scale is the ratio of the size of a model to the actual object it represents.
First, convert the metres into centimetres.
| 1 kilometre |
= |
1 000 000 millimetres |
| 1×1 000 0001 |
= |
1 000 000 |
|
| 1 |
: |
1 000 000 |
This ratio is already simplified.
