Unit 5 - Algebraic Expressions Mid Chapter Flashcard

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 2n + 3 is an algebraic expression.

Front

What does it mean to double a number in algebra?

Back

To double a number means to multiply it by 2. For example, if n is a number, then doubling it is represented as 2n.

Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the variable with a given number and perform the operations. For example, to evaluate 2y - 3 when y = 10, substitute 10 for y: 2(10) - 3 = 20 - 3 = 17.

Front

Back

Front

What is exponential form?

Back

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown number. For example, in the expression 2n, 'n' is the variable.

Front

What is the difference between an expression and an equation?

Back

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

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and perform operations to make it easier to understand or solve. For example, 2n + 3n simplifies to 5n.

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3n and 5n are like terms, while 3n and 4m are not.

Front

What is the distributive property?

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 parenthesis.