The distributive property of multiplication over addition allows us to eliminate the grouping symbol, usually in the form of parenthesis. Illustrates the basic pattern or formula and how to apply it.

Practice expanding expressions using the distributive property then combining like terms. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Normal distributions come up time and time again in statistics. A normal distribution has some interesting properties: it has a bell shape, the mean and median are equal, and 68% of the data falls within 1 standard deviation.

Practice solving equations with parentheses using the distributive property. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.