Review Expressions, Equations, PEMDAS

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, ×, ÷) that represents a value.

Front

How many terms are in the expression: 3a + 4b + c - 10 - 3?

Back

5

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).

Front

What is the first step in solving the expression 36 ÷ (6 - 2) - (2 × 1)?

Back

Calculate the value inside the parentheses: (6 - 2) = 4.

Front

If g = 6, what is the value of 3(g + 2) - 10?

Back

14

Front

What is the solution to the equation m - 158 = 168?

Back

m = 326.

Front

What step do you take to solve the equation x - 62 = 123?

Back

Add 62 to each side.

Front

What is a variable in an expression?

Back

A variable is a symbol (often a letter) that represents an unknown value.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.

Front

What is the order of operations in mathematics?

Back

The order of operations is the rules that dictate the sequence in which calculations are performed: PEMDAS.