Topic 3 Review

Front

Write an algebraic expression for "12 more than number".

Back

x + 12

Front

Add these expressions: (x+5) + (2x+10)

Back

3x + 15

Front

Which is GREATER? 2^7 or 7^2

Back

2^7

Front

Evaluate the expression: 9^2 + 5(3-2) ÷ 5

Back

82

Front

Write an algebraic expression for "8 less than a number".

Back

x - 8

Front

What is an algebraic expression?

Back

An expression that contains numbers, variables, and operations.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting variables with numbers.

Front

What is the order of operations?

Back

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right) - PEMDAS.

Front

What is a variable in algebra?

Back

A symbol, usually 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 equal sign, while an equation does.