Algebra Tiles and Solving Equations

Front

What is a variable?

Back

A letter that represents an unknown value.

Front

What is the main difference between an expression and an equation?

Back

An expression does not have an equal sign.

Front

What is the goal when solving an equation?

Back

To get the variable alone.

Front

What does the expression -2x + 4 represent?

Back

It represents a model with 2 negative x's and 4 positive units.

Front

Evaluate the expression 4ab + 3c if a=1/2, b=3, c=4.

Back

18.

Front

What is an expression in algebra?

Back

A combination of numbers, variables, and operators without an equal sign.

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions.

Front

What does it mean to simplify an expression?

Back

To combine like terms and reduce it to its simplest form.

Front

What are like terms?

Back

Terms that have the same variable raised to the same power.

Front

What is the distributive property?

Back

a(b + c) = ab + ac.