Ratios
In a drawing, there are three circles, four stars, and three triangles. What is the ratio of stars to the total number of shapes.
What is 2/5 or 4/10
George read 126 pages of a book in 18 minutes. How many pages did he read in 1 minute?
7 pages per minute
5 shovels of sand are mixed with 4 shovels of gravel to make cement. What is the number of shovels of gravel needed for 45 shovels of sand?
What is 36?
2.5 cups = _____ fl.oz.
20 fl.oz.
Write a unit rate for this situation: 310 heartbeats per 5 minutes
62 heartbeats/minute
The science materials cost $65.70 to do the experiment. If 9 students participated in the experiment, what was the unit cost per student?
$7.30
Ari can walk 2 miles in 40 min. What is the amount of time it will take him to walk 4 miles.
What is 80 min.?
3500 mg = _______ g
3.5 g
The recipe calls for 2 eggs for every 8 cups of flour. How many eggs are needed with 40 cups of flour?
10 eggs
The toys cost $69.95 for 5 models. What is the unit rate for each model toy?
$13.99 per model toy
Paul used 6 black tiles and 12 white tiles for a pattern. What is the ratio of black tiles to white tiles?
1:2 or 6:12
9.2 in. is about ______ cm
23.37 cm or 23.59 cm
There are 40 rabbits in a cage. The ratio of white rabbits to grey rabbits is 3:7. How many white rabbits are in the cage?
12 white rabbits
A factory can produce mousetraps at a rate of 1500 traps in 3 hours. What is the unit rate per hour?
500 traps per hour
Decide whether the rates are equivalent:
18 keystrokes in 3 seconds
48 keystrokes in 16 seconds
not equivalent
$2 per minute = $_______ per hour
$120 per hour
There are 75 mice in a cage. The ratio of pink mice to black mice is 2:3. How many black mice are in the cage?
45 mice
Hillary earned $45 babysitting. If she babysat for 6 hours, what was her rate per hour?
$7.50 per hour
Ivy's Fresh Eggs transports its eggs in crates. It takes 2 trucks to carry 80 crates. What is the number of crates that 8 trucks can carry.
320 crates
8 ft per hour is about ________ meters per minute
0.04 meters per minute