What expressions and exponents are
An expression uses numbers, variables, and operations to show a value.
Exponent: the small raised number. The exponent tells how many times to use the base as a factor. Variable: a letter for a number. Coefficient: the number that multiplies a variable.
Watch exponents and the order of operations
Order of operations: 1. Parentheses. 2. Exponents. 3. Multiply and divide from left to right. 4. Add and subtract from left to right.
Try it
Find the value of an expression
- Pick an expression.
- Move the slider to change the value of x.
- Look at the bar and the steps.
Steps:
Quick check
Answer 5 questions. You see your score at the end.