Evaluating Algebraic Expressions

Front

Evaluate x - 20 when x = 3

Back

-17

Front

Evaluate 6a - 3d when a = 1, d = 2

Back

0

Front

Evaluate x² when x = -2

Back

4

Front

Evaluate 3(2x + z) when x=8 and z=2

Back

54

Front

Evaluate 2r + 1 if r = -3

Back

-5

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting variables with numbers.

Front

What is a variable in algebra?

Back

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

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 the value of x² when x = 0?

Back

0