Unit 1 Post Test Review

Front

What is the change in Layla's money from spending to earning?

Back

The change is calculated by subtracting the amount spent from the amount earned: $35 - $12 = $23.

Front

What percent is equivalent to the fraction 7/20?

Back

35%.

Front

What is the average speed if Maria walked 450 meters in 9 minutes?

Back

50 meters per minute.

Front

What expression defines the distance between any two numbers x and y on a number line?

Back

The expression is ∣x−y∣.

Front

What does the quotient represent when five friends share a $20,000 project?

Back

The quotient represents the amount of money each friend has to pay to participate in the project.

Front

What is a rational number?

Back

A rational number is a number that can be expressed as a fraction or a whole number.

Front

What is an irrational number?

Back

An irrational number cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken.

Front

What does the absolute value symbol (| |) represent?

Back

The absolute value represents the distance of a number from zero on the number line, regardless of direction.

Front

What is the formula for calculating the cost per person when sharing expenses?

Back

Cost per person = Total cost ÷ Number of people.