Chapter 1 Vocab

Question 1

Absolute Value

Answer 1

Absolute Value: The distance between 0 and the number.

Question 2

Additive Inverse

Answer 2

The additive inverse of the number is it’s opposite or inverse

Example: -2 is the additive inverse of 2 (-2 and 2)

Question 3

Algebra

Answer 3

Algebra uses letters that represent numbers to express relationships.

Example: 2x + 1 = y

Question 4

Associative property of addition

Answer 4

The associative property states that you can add or multiply regardless of how the numbers are GROUPED.

Example: (2+7)+1= 2+(7+1)

Question 5

Associative property of multiplication

Answer 5

Associative Property: You could group the numbers different ways but the answer would still be the same.

Question 6

Base

Answer 6

Base: A number that is multiplied repeatedly.

Example: 3*= 3•3= 9

Question 7

Coefficient

Answer 7

Coefficient: The numerical factor when a term has a variable.

Example: 4x

Question 8

Commutative property of addition

Answer 8

Commutative property of addition states that numbers can be added together in any ORDER without changing the resolute.

Example: 1+2=2+1

Question 9

Commutative property of

Multiplication

Answer 9

Commutative property of multiplication states that two or more numbers can be multiplied in any order and the product will be the same.

Question 10

Definition of Subtraction

Answer 10

Whenever I see a subtraction problem, I leave the first number alone, change subtraction to addition and write the additive inverse of the second number.

Example: a-b = a+(-b)

Question 11

Distributive property

Answer 11

The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.

Question 12

Equation

Answer 12

A mathematical sentence with numbers, operation symbol, and a equal sign.

Question 13

Equivalent expressions

Answer 13

Two or more algebraic expression that are equal to each other.

Example: a•b•c = c•a•b equivalent

Question 14

Evaluate

Answer 14

To evaluate an algebraic expression, you have to substitute a number for each variable.

Example: Evaluate (ab+2) when a=1 & b=2

Question 15

Exponent

Answer 15

An exponent refers to the number of times a number is multiplied by itself.

Question 16

Integers

Answer 16

An integer is a whole number, not a fraction, that can be a negative, positive, or a zero.

Question 17

Irrational numbers

Answer 17

A number that cannot be expressed as a ratio between two integers, would have infinite number of digits and would not repeat.

Question 18

Liked terms

Answer 18

Like terms are coefficients that have the same variables.

Question 19

Multiplication inverse

Answer 19

Any number multiplied by its reciprocal, will always equal 1.

Question 20

Open sentence

Answer 20

A mathematical sentence that can be either true, false, or opened depending what values are there.

Question 21

Order of operations

Answer 21

The rules that say with calculation what will come first in an expression.

Question 22

Power

Answer 22

The base and exponent of an expression.

Question 23

Radical

Answer 23

An expression containing a radical symbol.

Question 24

Radicand

Answer 24

Radicand is the number under the radical symbol.

Question 25

Rational numbers

Answer 25

A real number that can be written as a ratio of two integers.

Question 26

Real number

Answer 26

Every number on the number line and more.

Question 27

Reciprocal

Answer 27

When we multiplied a number by its reciprocal we get one.

Question 28

Square root

Answer 28

The square root of a number is a value that when multiplied by itself gives the number.

Question 29

Term

Answer 29

A term is either a signal number or a variable or numbers and variables multiplied together. Terms are usually separated by signs.

Question 30

Variable

Answer 30

A symbol, usually a letter that represents one or more numbers.