Simplify to tell whether the ratios form a proportion.
12/36 & 1/3
YES
100
8/9 = 32/c
c = 36
100
Tell whether each transformation is a dilation:
See Worksheet #1
NO DILATION
100
Tell whether each scale reduces,enlarges,or preserves the size of the actual object.
1 ft:12 in
reduces
100
Find the appropriate factor for each conversion.
seconds to minutes
60 sec. / 1 min.
200
Simplify to tell whether the ratios form a proportion.
3/4 & 27/36
YES
200
18/4 = 45/a
a = 10
200
Tell whether each transformation is a dilation:
See Worksheet #2
YES- DILATION
200
Tell whether each scale reduces,enlarges,or preserves the size of the actual object.
20 cm:5 m
enlarges
200
mile to foot
5280 ft. / 1 mi.
300
Simplify to tell whether the ratios form a proportion.
30/36 & 1/5
NO
300
1.2/4 = 2.7/a
a = 9
300
A 5 ft wide by 11 ft long garden is to be enlarged to a width
of 7.5 ft.How long does the garden need to be so that the
new garden is similar to the original garden?
16.5 ft.
300
Tell whether each scale reduces,enlarges,or preserves the size of the actual object.
1 yd:1 mi
preserves
300
millimeters to meters
1 m / 1000 mm
400
Find each unit price and tell which is the better buy.
a can of peas at $0.56 for 14 oz;a can of peas at $0.99 for 31 oz
$0.04; $0.03; $0.99 for 31 oz
400
1/7 = r/0.7
r = 0.1
400
A 4 in.high by 6 in.wide picture is to be made into a poster
that is 1 and 1/2 ft wide.How high will the poster be?
1 ft.
400
If a scale of 4 in.=10 ft is used, how
long is an object that is 16 in.long in
a drawing?
40 ft.
400
miles biked in 1 hour at an average rate of 17.6 feet per second
12 mi
500
Sue is enlarging a 10 in. X 18 in.picture to be a 20 in. X 28 in. picture. Has she enlarged it proportionately? Explain.
No; It would need to be 20 in. X 36 in. or 15.6 in. X 8 in
500
A 20 kg weight is positioned 4 cm from a fulcrum.At what
distance from the fulcrum must a 16 kg weight be positioned
to keep the scale balanced?
5 cm
500
The figures in the pair are similar. Solve for x:
See Worksheet #3
x = 6.125 ft.
500
The scale on a map is 1 in.= 26
miles.What is the actual distance for
2.5 in.?
65 mi.
500
In 1911, the first year of the Indianapolis 500 auto race, the winning car had an average speed of 109.416 feet per second. What is that speed in miles per hour?