Evaluating 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

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 value of 4x if x=5?

Back

20

Front

Evaluate 2(x-5)+8 for x=1.

Back

0

Front

What is the value of 5m + 7 if m = 5?

Back

32

Front

Write an algebraic expression for '12 more than a number'.

Back

x + 12

Front

What is the value of 6+x when x=53?

Back

59

Front

What is a variable in an algebraic expression?

Back

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

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.