Khan Academy: Translating Expressions With Parentheses

Solve multi-step expressions with parentheses. Place parentheses in an expression to make the expression equivalent to a given number. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...

Practice creating expressions with parentheses from real-world contexts. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice changing expressions from words to math. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice writing expressions with variables and parentheses. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice writing expressions with variables. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice factoring numerical expressions using the distributive property. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice plugging in values to evaluate real-world algebraic expressions. These are introductory problems, so the expressions aren't too complicated. Students receive immediate feedback and have the opportunity to try questions...

Practice writing algebraic expressions to match verbal descriptions of mathematical operations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice evaluating expressions in two variables by plugging in values for the variables. These problems include some fractions and decimals. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch...

Sal Khan illustrates an evaluating expressions example that has two variables. [2:05]