CC2 Ch.4 Review

Front

What is the unit rate?

Back

The unit rate is a comparison of any two separate but related quantities when they are combined into a single ratio. It is often expressed as a quantity per one unit, such as dollars per hour.

Front

How do you calculate the unit rate?

Back

To calculate the unit rate, divide the total amount by the number of units. For example, if you earn $200 for 8 hours of work, the unit rate is $200 ÷ 8 = $25 per hour.

Front

What are the coordinates of the origin in the coordinate plane?

Back

The coordinates of the origin in the coordinate plane are (0,0).

Front

What is perimeter?

Back

Perimeter is the total distance around a two-dimensional shape. It is calculated by adding the lengths of all the sides.

Front

How do you find the perimeter of a rectangle?

Back

To find the perimeter of a rectangle, use the formula P = 2(length + width).

Front

What is a unit price?

Back

The unit price is the cost per single unit of measure, such as price per slice or price per pound.

Front

How do you compare unit prices?

Back

To compare unit prices, calculate the unit price for each option and choose the one with the lower cost per unit.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. It is often remembered by the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What does the expression 5^2 mean?

Back

The expression 5^2 means 5 raised to the power of 2, which is equal to 5 * 5 = 25.

Front

How do you solve the expression 90 - 5^2 * 3?

Back

First, calculate 5^2 = 25. Then multiply by 3 to get 75. Finally, subtract from 90: 90 - 75 = 15.