Ch 3 Test Review (Algebraic Expressions/Distributive Property)

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols (like +, -, *, /). For example, 3x + 5 is an algebraic expression.

Front

What does the distributive property state?

Back

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a single term by two or more terms inside a set of parentheses.

Front

How do you express '20 fewer than the number f' in algebraic terms?

Back

The expression is f - 20.

Front

What is the equivalent expression for 3(5x + 4y)?

Back

The equivalent expression is 15x + 12y.

Front

If there are n flowerbeds and each has 15 roses, how do you express the total number of roses?

Back

The total number of roses is expressed as 15n.

Front

How do you simplify the expression 7.8p + 12.8 - 2.8p?

Back

The simplified expression is 5p + 12.8.

Front

What is the value of the expression 180 - 4ab when a = 4 and b = 5?

Back

The value is 100.

Front

What is a variable in algebra?

Back

A variable is a symbol (usually a letter) that represents an unknown value. For example, in the expression 2x + 3, x is the variable.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with specific numbers.

Front

What is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression is a combination of numbers and variables without an equality sign.