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 product of seven and j'.

Back

7j

Front

Evaluate the expression 6y - 13 for y = 4.

Back

11

Front

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

Back

x - 8

Front

Write an algebraic expression for 'the difference of eighteen and a number'.

Back

18 - n

Front

Evaluate the expression 5n + 10 for n = 3.

Back

25

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

Write an algebraic expression for 'the sum of a number and 12'.

Back

x + 12

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 'twice a number decreased by 5'.

Back

2x - 5