Evaluating 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, 3x + 5 is an algebraic expression.

Front

Write an algebraic expression for 'the quotient of a number and 4'.

Back

n / 4

Front

Evaluate 6y - 13 if y = 4.

Back

11

Front

Evaluate the expression for x = 2: 4 - x.

Back

2

Front

Write an algebraic expression for 'a number subtracted from eight'.

Back

8 - n

Front

Evaluate 2r + 1 if r = 3.

Back

7

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 the difference between an expression and an equation?

Back

An expression is a combination of numbers and variables without an equality sign, while an equation states that two expressions are equal.

Front

Write an algebraic expression for 'three times a number increased by 5'.

Back

3n + 5

Front

Evaluate the expression 5x + 2 when x = 1.

Back

7