Let's take a look at a trickier example Write an expression for " m decreased by 7 ". Notice that the phrase "decreased by" tells us to use subtraction. So the expression is m 7 . Why isn't the …

The core idea in algebra is using letters to represent relationships between numbers without specifying what those numbers are! Let's explore the basics of communicating in algebraic …

Identify the key terms in the written statement (e.g. "sum," "product," "quantity"). 2. Break the statement down into its component parts. 3. Translate each part into algebraic form, using the …

In algebra, x is the most frequently used variable and we don't want to confuse this variable with the ordinary multiplication symbol (which is x or X). So once we go beyond arithmetic into …

In this math lesson, we learned about expressions and how to simplify them step by step. We explored adding and multiplying expressions, like negative numbers and variables. By …

Define a variable. Write an equation using the variable. Solve the equation. If the variable is not the answer to the word problem, use the variable to calculate the answer.

Video transcript - Let's do a few examples of writing expressions to help us solve word problems. So they tell us Susie ran a race. She ran five miles an hour, and the race took her t hours to …

Expand your algebra superpowers by introducing exponents! Let's build our toolkit that allows us to manipulate exponents algebraically.

Nicholas used a $ 10 bill to pay for a granola bar that only costs p dollars. How much change did Nicholas receive from the cashier? Write your answer as an expression.

Practice writing algebraic expressions to match verbal descriptions of mathematical operations.