Chap. 6 vocab

Question 1

algebra

Answer 1

A language of symbols including variables.

Question 2

algebraic expression

Answer 2

contain at least one variable and at least one operation.

Question 3

associative properties

Answer 3

the way in which three numbers are grouped when they are added or multiplied does not change their sum or product.

Question 4

commutative properties

Answer 4

The order in which two numbers are added or multiplied does not change their sum of product.

Question 5

Identity properties

Answer 5

The sum of and addend and 0 is the addend. The product of a factor and 1 is the factor,

Question 6

properties

Answer 6

statements that are true for any number.

Question 7

equivalent expressions

Answer 7

they have the same value.

Question 8

powers

Answer 8

Numbers expressed using exponents

Question 9

perfect squares

Answer 9

they are the squares of whole numbers

Question 10

numerical expression

Answer 10

is a a combination of numbers and operations.

Question 11

order of operations

Answer 11

tells you which operation to preform first so that everyone finds the same value for an expression.

Question 12

variable

Answer 12

a symbol, usually a letter, used to represent a number.

Question 13

defining the variable

Answer 13

choose a variable and decide what it represents.

Question 14

Distributive property

Answer 14

combines addition and multipucation

Question 15

term

Answer 15

When addition or subtraction signs separate an algebraic expression into parts, each part is called

Question 16

coefficient

Answer 16

The numerical factor of a term that contains a variable .

Question 17

constant

Answer 17

A term without a variable.

Question 18

Like terms

Answer 18

are terms that contain the same variables,

Question 19

equation

Answer 19

a mathematical sentence showing two expressions are equal.

Question 20

equals sign

Answer 20

An equation contains an equals sign