Unit 1 Review

Front

What are variables in an expression?

Back

Variables are symbols that represent unknown values, typically denoted by letters such as p and h.

Front

What does PEMDAS stand for?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). It is the order of operations used to solve mathematical expressions.

Front

How do you evaluate an expression with given values?

Back

To evaluate an expression, substitute the given values for the variables and perform the operations according to the order of operations.

Front

What is the simplified form of 7v + 2 + 12 + 2v?

Back

The simplified form is 9v + 14.

Front

How do you solve -10(p + 4) when p = -6?

Back

Substitute -6 for p: -10(-6 + 4) = -10(-2) = 20.

Front

What is the result of 12 + 36 ÷ 4 using PEMDAS?

Back

The result is 21.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, such as the number 2 in the expression 5p + 4h - 2.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power, such as 2v and 5v.