Topic 3 Review - Expressions (- equivalent expressions)

Front

What is an expression in mathematics?

Back

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

Front

How many terms are in the expression 3a + 2b + c + 100?

Back

4

Front

What is the value of the expression 10 + 45 ÷ 9 - (14 ÷ 2)?

Back

8

Front

What operation do you perform first in the expression (12 + 10) ÷ 10 · 14 - 6?

Back

Addition

Front

Evaluate the expression 6a - 3d when a = 1 and d = 2.

Back

0

Front

How many terms are in the algebraic expression 4x + 5y - 2?

Back

3

Front

What is a variable in an expression?

Back

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

Front

What does it mean for two expressions to be equivalent?

Back

Two expressions are equivalent if they have the same value for all values of the variables.

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.