Evaluating Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 2x + 3 is an algebraic expression.

Front

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

Back

0

Front

Evaluate the expression: 2x + 5(y - 1) when x = 8 and y = 5.

Back

36

Front

Evaluate the expression: b² + 4 when b = 3.

Back

13

Front

Translate: 12 fewer pencils than the number of pencils, p, in my desk.

Back

p - 12

Front

Evaluate the expression: 2x + x² for x = 3.

Back

15

Front

What does it mean to evaluate an expression?

Back

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

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown number or value in an expression or equation.

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 is the order of operations in mathematics?

Back

The order of operations is a set of rules that dictates the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).