Chapter 3 Practice Test

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Name: _______________________________
Date: ______________________________
..BLM 3–3..
Chapter 3 Practice Test
For #1 to #3, write the word from the box that completes each sentence.
scale
reduction
enlargement
1. An ___________________is a diagram that is larger than actual size.
2. The ___________________ is the ratio of diagram measurement : actual
measurement.
3. A ___________________ is a diagram drawn smaller than actual size.
4. Identify, in millimetres, the location of each arrow.
a) __________
b) __________
c) __________
5. Convert each answer from #4 to centimetres.
a) __________
b) __________
c) __________
6. Measure each of the line segments shown below using a metric ruler.
Write the measurements in the chart.
mm
a)
a)
b)
b)
c)
c)
d)
d)
e)
e)
f)
f)
Copyright © 2006 McGraw-Hill Ryerson
cm
Name: _______________________________
Date: ______________________________
..BLM 3–3..
(continued)
8. Your friend has an actual height of 155 cm.
A scale reduction of your friend is shown.
a) Measure the height of the diagram. __________ cm
b) You friend is actually __________ times
as tall as the diagram.
c) The scale of this drawing is 1: __________.
(Use the formula below to help you calculate your answer.)
________cm =________cm
________cm ____?____
9. Draw a 3:1 enlargement of this eraser.
Copyright © 2006 McGraw-Hill Ryerson
x
___________
=
10. The following places are found on the southern Ontario side of the Official Ontario
Provincial road map. The scale of the map is 1:700 000. Find the estimated
driving distance between each pair of locations.
From
Distance on Map
(1 decimal
place)
a) London to Windsor
27.3 cm
b) Goderich to Owen Sound
18.6 cm
c) Waterloo to Belleville
39.3 cm
d) North Bay to Sudbury
17.6 cm
a)
c)
Estimated
Driving Distance
(nearest km)
b)
d)
Calculate the time it would take to reach each destination.
a)
c)
Copyright © 2006 McGraw-Hill Ryerson
b)
d)
This means
that 1 cm on the
map represents
__________ km
on the ground.
11. Explain how scale can help you enlarge or reduce a drawing.
12. Why would someone use an enlargement or a reduction? Provide examples.
13. How do you decide which unit of measure to use when you are measuring
something?
14. Explain the steps used to convert one unit of measure to another unit of
measure (e.g. mm to dm or m to km)
15. How would each of the following use ratio, proportion or scale to help them in
their job?
a) a gardener,
b) a chef
c) a delivery company
Copyright © 2006 McGraw-Hill Ryerson
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