Understand Ratios
The ratio of cats to dogs is 3 to 5.
Write this ratio three different ways.
1.) 3:5
2.) 3 to 5
3.) 3/5
A car travels 60 miles in 2 hours.
What is the unit rate in miles per hour?
30 miles per hour
Compare 2:3 and 4:6.
Are they equivalent?
Yes, they are equivalent.
Marcy charges $3 per dog walked. How much does she make for walking 5 dogs?
$15
How many inches are in 3 feet?
36 inches
There are 8 red marbles and 12 blue marbles.
What is the simplified ratio of red to blue marbles?
2:3 or 2/3 or 2 to 3
A store sells 12 pencils for $36.
What is the cost per pencil?
$3 per pencil
Which is the better deal:
3 apples for $6
or
5 apples for $10
Both are the same price ($2 per apple)
A bag has a ratio of 2 red marbles for every 3 blue marbles.
If there are 20 red marbles, how many blue marbles are there?
30 blue marbles.
Convert 4 yards into feet.
12 feet
A class has 18 boys and 24 girls.
Write the ratio of girls to total students.
24/42, 24 to 42, or 24:42
Simplified: 4/7
A student reads 45 pages in 3 hours.
What is the unit rate in pages per hour?
15 pages per hour
Group A has 6 boys and 9 girls.
Group B has 10 boys and 15 girls.
Do they have the same ratio of boys to girls? Answer with a simplified ratio.
Yes (both 2:3)
A survey shows 12 students like action movies and 8 like comedy movies.
If 100 students were surveyed, how many would like comedy?
40 students like comedy
How many cups are in 3 gallons?
48 cups
A baker uses 6 cups of flour for every 9 cups of sugar.
Write the ratio of flour to sugar in simplest form.
2/3, 2:3, or 2 to 3
A factory makes 120 toys in 8 hours.
How many toys does it make per hour?
15 toys per hour
A red car travels 60 miles in 2 hours.
A blue car travels 120 miles in 5 hours.
Which car is faster?
The red car is faster at 30 mph.
A map has a scale of 1 inch = 5 miles.
How many miles does 7 inches represent?
35 miles
A rope is 72 inches long. How many feet long is it?
6 feet
There are 45 students and 30 chairs in the cafeteria.
Write the ratio of students to chairs in simplest form.
3/2, 3:2, or 3 to 2
A runner completes 300 laps in 25 minutes.
What is the unit rate in laps per minute?
12 laps per minute
Team A scores 18 points in 6 minutes.
Team B scores 45 points in 15 minutes.
Which team scores faster?
Both score at the same rate (3 points per minute).
A school has a 3:2 ratio of boys to girls.
If there are 120 boys, how many girls are there?
80 girls
A container holds 32 ounces of water. How many pints is this?
2 pints