4.2 Mastery Check [Math7] Algebraic Expressions Combine Like Ter

Front

Write an algebraic expression for the situation: Sam has knitted 6 scarves. She knits 2 scarves every week. How many scarves will she have in $ w $ weeks?

Back

6 + 2w

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

What are like terms in algebra?

Back

Like terms are terms that have the same variable raised to the same power.

Front

Combine the like terms: 3x + 5x

Back

8x

Front

Combine the like terms: 4y + 2y - 3y

Back

3y

Front

What is the coefficient in the term 7x?

Back

The coefficient is 7.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.

Front

Combine the like terms: 2a + 3b + 4a

Back

6a + 3b

Front

What is the first step in combining like terms?

Back

Identify and group the like terms together.

Front

Write an algebraic expression for: A number decreased by 5.

Back

x - 5