Mid-unit 3 Review

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It expresses how much of one quantity corresponds to one unit of another quantity.

Front

How do you calculate the unit rate of a quantity?

Back

To calculate the unit rate, divide the total quantity by the number of units. For example, if 35 diapers cost $6.99, the unit rate is $6.99 ÷ 35 = $0.20 per diaper.

Front

If Antonia can type 408 words in 4 minutes, how do you find her typing speed in words per minute?

Back

Divide the total words by the total minutes: 408 words ÷ 4 minutes = 102 words per minute.

Front

What is the formula to solve for x in an equation?

Back

To solve for x, isolate x on one side of the equation using inverse operations (addition, subtraction, multiplication, division) to maintain equality.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How do you solve a proportion?

Back

Cross-multiply the terms and set the products equal to each other. For example, if a/b = c/d, then ad = bc.

Front

What is the unit rate of pay if Elijah earned $200 for 8 hours of work?

Back

To find the unit rate, divide the total earnings by the total hours: $200 ÷ 8 hours = $25 per hour.

Front

What does it mean to find the unit rate of an item?

Back

Finding the unit rate of an item means determining the cost or value of one single unit of that item.

Front

How do you convert a total cost to a unit cost?

Back

To convert total cost to unit cost, divide the total cost by the number of units. For example, if a box of 35 diapers costs $6.99, the unit cost is $6.99 ÷ 35.

Front

What is the significance of unit rates in real-life situations?

Back

Unit rates help compare prices, speeds, and other quantities, making it easier to make informed decisions.