1-1 Variables and Expressions

Algebra One CP2

Chapter 1

Variable- A symbol used to represent unspecified numbers.

Algebraic Expressions- An expression consisting of one or more numbers and variables along with one or more arithmetic operation.

Factors- The quantities being multiplied in a multiplication expression.

Product- The result of multiplication.

Power- An expression in the form of xn.

Base- In an expression in the form xn, x is the base.

Exponent- In an expression in the form xn, n is the exponent.

Evaluate- To find the value of an expression when the values of the variables are known.

Write an algebraic expression for each verbal expression.

Ex. 1: m increased by 5

Ex. 2: the difference of x and 9

Ex. 3: twice the sum of 10 and x

Ex. 4: 7 times the product of x and t

Write a verbal expression for each algebraic expression. (Do NOT use “plus”, “minus”, “times”, or “divided by”)

Ex. 5: ⅓x

Ex. 6: x2 – 40

Ex. 7: 5 ÷ x