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

Evaluate the expression: m + 5p, where m = 15 and p = 4.

Back

35

Front

How do you write 4 * 4 * 4 * 4 * 4 * 4 * 4 * 4 in exponent form?

Back

4^8

Front

What does the variable 'w' represent in the expression 8w + t?

Back

The variable 'w' represents the number of weeks worked.

Front

If Michael works for 6 weeks and makes $20 in tips, how much money does he make using the expression 8w + t?

Back

$68

Front

Evaluate b^2 + 4 when b = 3.

Back

13

Front

What is the value of the expression 2x + 3 + x^2 for x = 4?

Back

27

Front

What is a variable in an expression?

Back

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

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation states that two expressions are equal.

Front

What does the term 'evaluate' mean in mathematics?

Back

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