Ratios and Rates
What does a ratio compare?
2 quantities
What is a proportion?
an equation that states 2 ratios are equal
What is 1/2 + 1/4?
3/4
What percent is 25 out of 100?
25%
4738 + 3948
8686
Write the ratio of 2 apples to 5 oranges in 3 ways
2:5 or 2/5
Solve: 2/3 = ?/9
6
0.6 x 5 = ?
3
Convert .2 to a percent
20%
23 X 403
9269
If a car travels 120 miles in 3 hours, what is the unit rate?
40 miles per hour
If 5 pencils cost $3, how much do 15 pencils cost?
$9
Convert 3/8 to a decimal
.375
$11.60
Find the average: 50, 46,54
50
A recipe calls for 3 cups of sugar for 12 cookies. How much sugar for 24 cookies?
6 cups
The ratio of cats to dogs is 2.5. If there are 20 dogs, how may cats?
8 cats
Simplify: 5/10 + 3/5
1
A shirt costs $40 and is on sale for 25% off. What percent did they get?
$30
654 - 75
579
Are these 2 ratios equivalent?
4/6 = 12/18
yes
A map scale says 1 inch = 10 miles. How many miles does 2.5 inches represent?
25 miles
Divide: 4/0.5
8
A student scored 45 out of 50 on a test. What percent did they get?
90%
986/2
493