Chap1Vocabulary

A letter that stands for a number is called a(n) _______________.

An algebraic expression is a mathematical phrase that contains variables, numbers, operational symbols and an equals sign.

• True

• false

To ___________ an algebraic expression, replace each variable with a number. Then follow the order of operations to simplify the expression.

Match the following for the Order of Operations.

• Add and subtract from left to right

• Step 1

• Multiply and divide from left to right

• Step 2

• Work inside the grouping symbols

• Step 4

• Simplify the exponents

• Step 3

Two numbers that are the same distance from zero on a number line in different directions are called ___________.

__________are the set of whole numbers, their opposites, and zero.

• rational numbers

• integers

• absolute value

• opposites

The ______________of a number is its distance from zero on a number line.

Two numbers whose sum is zero are ______________.

• cancellations

• absolute values

• additive inverses

• rational numbers

Two numbers are _________________if their product is 1.

The reciprocal of a number is called its ___________________________.