Algebraic Expressions Comprehension Check

Front

What does 3² mean?

Back

3 x 3

Front

The sum of seven and x is represented as:

Back

7 + x

Front

Five less than y is represented as:

Back

y - 5

Front

Evaluate 2r + 1 if r = 3:

Back

7

Front

Simplify: 3(9 + 2d) + 4d

Back

27 + 10d

Front

What is an algebraic expression?

Back

A mathematical phrase that can include numbers, variables, and operation symbols.

Front

What is a variable in algebra?

Back

A symbol (often a letter) that represents an unknown value.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting variables with numbers.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not have an equality sign.

Front

What is the distributive property?

Back

a(b + c) = ab + ac, distributing a across the sum.