Scales 1

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Scales 1

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Question 1 of 4

1. Question
Identify which of the following are scales
- 1. $\text(A baking recipe using three parts water and two parts flour)$
- 2. $\text(Price of oranges per kilogram)$
- 3. $\text(Creating a building plan)$
- 4. $\text(Using a map)$
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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, $\text(Using a map)$ and $\text(Creating a building plan)$ are both scales.
Question 2 of 4

2. Question
Find the ratio of the scale $1 \text(cm):1 \text(m)$ using $\text(cm)$ as the unit
- (1) $:$ (100)
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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.

$1 \text(metre)$ $=$ $100 \text(centimetres)$

$1xx(100)/1$ $=$ $100$

$1$ $:$ $100$

This ratio is already simplified.

$1:100$
Question 3 of 4

3. Question
Find the ratio of the scale $1 \text(cm):5 \text(m)$ using $\text(cm)$ as the unit
- (1) $:$ (500)
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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.

$1 \text(metre)$ $=$ $100 \text(centimetres)$

$5xx(100)/1$ $=$ $500$

$1$ $:$ $500$

This ratio is already simplified.

$1:500$
Question 4 of 4

4. Question
Find the ratio of the scale $1 \text(mm):1 \text(km)$ using $\text(mm)$ as the unit
- (1) $:$ (1000000)
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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.

$1 \text(kilometre)$ $=$ $1 000 000 \text(millimetres)$

$1xx(1 000 000)/1$ $=$ $1 000 000$

$1$ $:$ $1 000 000$

This ratio is already simplified.

$1:1 000 000$

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Quizzes

$1xx(100)/1$	$=$	$100$

$1$	$:$	$100$

$5xx(100)/1$	$=$	$500$

$1$	$:$	$500$

$1xx(1 000 000)/1$	$=$	$1 000 000$

$1$	$:$	$1 000 000$