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Chapter 1 Vocabulary

Across
An expression that consists of numbers, variables, and operations
The sum of a number and the additive identity
A symbol, usually a letter, that is used to represent one or more numbers
Two numbers are opposites if they have the same absolute value but different signs. Opposites are the same distance from 0 on a number line but are on opposite sides of 0. The opposite of 0 is 0
The number of expression that is used as a factor in a repeated multiplication
The number 1 is the multiplicative identity because the product of any number and 1 is the original number
Evaluating expressions with units of measure and checking that your answer uses correct units; also called dimensional analysis
The numbers..., -4, -3, -2, -1, 0, 1, 2, 3, 4..., consisting of the negitive integers, zero, and the positive integers
The integers that are greater than zero
The sum of the values in a data set divided by the number of values
Down
Data are facts or numerical information
A way of writing repeated multiplication
A set of rules for evaluating an expression involving more than one operation
Numerical expressions that are equal, or algebraic expressions that are equal for all values of the variable(s)
The absolute value of a number a is the distance between a and 0 on a number line
The integers that are less than zero
To fidn the value of an expression consisting of numbers and operations
A number or expression that represents how many times a base id used as a factor in repeated