7th Grade Math Semester 1 Review

Front

What is the probability of getting tails on a coin and a 3 on a number cube?

Back

Front

If a machine takes 12 minutes to fill 200 bottles, how long will it take to fill 800 bottles?

Back

It will take 48 minutes.

Front

How many customers can a cashier ring up in 45 minutes if he rings up 2 customers in 3 minutes?

Back

He can ring up 30 customers.

Front

What does it mean for a graph to be proportional?

Back

A proportional graph shows a constant ratio between two variables, represented by a straight line through the origin.

Front

Which equation has x = 2 as a solution?

Back

Front

What is the formula for calculating probability?

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes).

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio.

Front

How do you find the unit rate?

Back

Divide the total quantity by the number of units.

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for finding the perimeter of a rectangle?

Back

Perimeter = 2(length + width).