Unit 5 Review

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

If the ratio of boys to girls is 3:2 and there are 12 boys, how many girls are there?

Back

8 girls

Front

What does it mean to find a percentage of a number?

Back

Finding a percentage of a number involves calculating how much of that number corresponds to a given percentage.

Front

A student scored 80% on a test with 20 problems. How many problems did they answer correctly?

Back

16 problems

Front

How many feet are in a mile?

Back

1 mile = 5,280 feet.

Front

Convert 3 miles to feet.

Back

3 miles = 15,840 feet.

Front

What is the conversion factor from inches to centimeters?

Back

1 inch is approximately equal to 2.54 centimeters.

Front

How many inches are in 16 cm?

Back

Approximately 6.3 inches.

Front

What is the formula to find the total number when given a percentage?

Back

Total = Part / (Percentage / 100).

Front

If 25 is 40% of a number, how do you find that number?

Back

Number = 25 / 0.40 = 62.5.