Unit 3 Assessment

Front

A car travels 150 miles in 3 hours. How do you calculate the time to travel 300 miles at the same rate?

Back

To find the time, first calculate the speed: Speed = Distance/Time = 150 miles / 3 hours = 50 miles/hour. Then, use the formula Time = Distance/Speed. For 300 miles: Time = 300 miles / 50 miles/hour = 6 hours.

Front

What is the formula to calculate percentage?

Back

Percentage = (Part/Whole) x 100. For example, if you scored 18 out of 20, the percentage is (18/20) x 100 = 90%.

Front

If it took 4 hours to drive 240 miles, how do you find the time to drive 90 miles?

Back

First, find the speed: Speed = Distance/Time = 240 miles / 4 hours = 60 miles/hour. Then, use Time = Distance/Speed. For 90 miles: Time = 90 miles / 60 miles/hour = 1.5 hours or 1 1/2 hours.

Front

Lin’s family has completed 60% of a trip and traveled 30 miles. How do you find the total distance of the trip?

Back

If 30 miles is 60% of the trip, then 100% of the trip is found by: Total Distance = Part / Percentage = 30 miles / 0.6 = 50 miles.

Front

How do you calculate the amount of time Noah has exercised if he completed 35% of 200 minutes?

Back

To find the time exercised: Time = Goal x Percentage = 200 minutes x 0.35 = 70 minutes.

Front

How do you calculate the amount of time Andre has exercised if he completed 40% of 180 minutes?

Back

To find the time exercised: Time = Goal x Percentage = 180 minutes x 0.40 = 72 minutes.

Front

What is the relationship between distance, speed, and time?

Back

The relationship is defined by the formula: Distance = Speed x Time.

Front

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

Back

Finding a percentage of a number means calculating a fraction of that number based on the percentage value. For example, 25% of 200 is 0.25 x 200 = 50.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100. For example, 3/4 = (3 ÷ 4) x 100 = 75%.

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.