Proportions/Scales
3/8=m/16
m=6
Write 4:20 as a ratio in simplest form.
1/5 or 1:5
1 yd =__ ft
3
A comparison between two quantities
What is a ratio?
8,400 cm = ___ m
84
3/2=15/r
r=10
20 in. out of 35 in.
4/7 or 4:7
1 m =___ cm
100
A comparison between two different types of quantities
What is a rate?
48 in = ___ ft
4
If the scale of a map is 1 in : 40 mi, how many miles does 3 in on the map represent?
120 mi
The simplified ratio of puppies to kittens in a shelter if there were 16 kittens and 24 puppies.
3/2 or 3:2
1 lb = __ oz
16
A ratio equal to 1 used to change from one unit to another
What is a conversion factor?
96 oz = ___ lb
6
If the scale on a map is 1 in : 12 mi, how many inches would represent 9 mi? (exact decimal answer)
0.75 in
6 in. to 2 ft.
1/4 or 1:4
1 L =____ mL
1,000
Two ratios that are equal to each other form this.
What is a proportion?
45 L/hr = ___ L/day
1,080
Students are building a model of a volcano. The volcano is about 8,000 ft. tall. The students want the model to be 50 in. tall. Find the scale they should use.
1 in : 160 ft
10 min. to 3 hr. as a ratio in simplest form
1/18 or 1:18
1 mi = ____ ft
5,280
On a map, 1 in. : 50 mi. is called this.
What is a scale?
4 in/s = ___ ft/hr
1,200