Shared Flashcard Set

Details

Algebra I
Flash Cards to Review for Algebra I
48
Mathematics
9th Grade
04/10/2008

Additional Mathematics Flashcards

 


 

Cards

Term

 

 

 

The ________ _________ is formed by a horizontal number line (known as the x-axis) and a vertical number line ( known as the y-axis)

Definition
 
 
 
 
 Coordinate Plane
Term

 

 

 

The point where the x and y axes intersect is called the _________.

Definition

 

 

 

 

Origin 

Term

 

 

 

Round this number to the nearest ones place:

 

 156.5

Definition

 

 

 

 

157 

Term

 

 

 

A ______ is a number that divides into another number with no remainder. 

Definition

 

 

 

 

 

Factor 

Term

 

 

 

A composite number has more than _____ factors 

Definition

 

 

 

 

Term

 

 

 

A _______ _______ has only two factors 

Definition

 

 

 

 

Prime Number 

Term

 

 

 

Identify which of these is a composite number

 

 

7 or 12 

Definition

 

 

 

 

 

12 

Term

 

 

 

The _______ _______ ________ or GCF of two or more numbers is the greatest whole number that is a factor of all numbers. 

Definition

 

 

 

 

Greatest Common Factor 

Term

 

 

 

What is the greatest common factor of

 

12 and 24 

Definition

 

 

 

 

 12

Term

 

 

 

 

The least whole number that is a multiple of the numbers is called the ______ _______ _______ or LCM

Definition

 

 

 

 

Least Common Multiple 

Term

 

 

 

 

What is the least common multiple of

 

8 and 12 

Definition

 

 

 

 

24

because 8×3 is 24 and 12×2 is 24

Term

 

 

 

 

______ fractions are fractions that represent the same quantity. 

Definition

 

 

 

 

 

Equivalent  

Term

 

 

 

 

How could you tell if 11/12 is equal to 5/17? 

Definition

 

 

 

 

 

Cross multiply

 

Example: Is 11 times 17 equal to 12 times 5? 

Term

 

 

 

 

What is 1/2 in decimal form and percent form? 

Definition

 

 

 

 

decimal form: .5

percent form: 50% 

Term

 

 

 

 

How do you turn a fraction into a decimal? 

Definition

 

 

 

 

Divide the top by the bottom

 

Ex: 3/8 is .375 

Term

 

 

 

 

Reduce the following fraction:

 

8/24 

Definition

 

 

 

1/3

 

You divide both the top and bottom by the greatest common factor, in this case it was 8. 

Term

 

 

 

Write this number as a percent

 

1.56 

Definition

 

 

 

156%

 

 You move the decimal two places to the right. 

Term

 

 

 

The _____ ______ _______, or LCD of two or more fractions is the least number that is a common denominator of the fractions. 

Definition

 

 

 

 

Least Common Denominator 

Term

 

 

 

What is the Least Common Denominator of 1/6 and 1/9? 

Definition

 

 

 

18

because you take the Least Common Multiple of both denominators, in this case it was 18.

Term

 

 

 

How do you multiply fractions?

 

 

 

Definition

 

 

 

 

Multiply across 

 

 Ex: 1/9×1/2=(1×1)/(9×2)=1/18

 

 

 

Term

 

 

 

 

How do you divide fractions? 

Definition

 

 

 

 

Flip the second fraction and multiply across

 

Ex: 3/4 ÷1/2=(3/4)×(2/1)=6/4

Term

 

 

 

A _____ is a letter or symbol used to represent a value that can change (Usually represented by x). 

Definition

 

 

 

 

Variable 

Term

 

 

 

 

A _____ is a value that does not change. 

Definition

 

 

 

 

Constant 

Term

 

 

 

What is x+y if x=8 and y=5? 

Definition

 

 

 

x+y

=8+5

=13

Term

 

 

 

Two numbers are ______ if their sum is 0. 

 

Definition

 

 

 

 

Opposites 

 

Ex:5+-5=0

Term

 

 

 

Two numbers are _______ if their product is 1. 

Definition

 

 

 

Reciprocal

 

 

Ex: 5×(1/5)=1

Term

 

 

 

The multiplicative inverse of 5 is

 

 

Definition

 

 

 

 

1/5

because 5×1/5 is 1 and multiplicative inverses multiply to be 1. 

 

 

 

 

Term

 

 

 

 

A ______ is an expression written with an exponent and a base.

Definition

 

 

 

 

Power 

Term

 

 

 

 

Identify which is the base and which is the exponent in

 

32

Definition

 

 

3 is the base

 

2 is the exponent 

Term

 

 

 

 List the order of operations.

Definition

 

 

Please Excuse My Dear Aunt Sally

 

Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction

Term

 

 

 

What is 34?

Definition

 

 

3×3×3×3

=81

Term

 

 

What is the equation of a line?

Definition

 

 

 

y=mx+b

Term

 

 

In y=mx+b, what does the m stand for?

 

What does the b stand for?

Definition

 

 

The m stands for the slope.

 

The b stands for the y intercept.

Term

 

 

Solve the equation

 

4x=-12

Definition

 

 

4x=-12

x=-12/4

x=-3

Term

 

 

Solve the equation

 

2x+4=8

Definition

 

 

2x+4=8

2x=4

x=2

Term

 

 

What is the slope of the following equation

 

y=3x+4

 

 

Definition

 

 

 

The slope is 3

Term

 

 

 What is the slope of the following equation

 

2y-4x=8

Definition

 

2y-4x=8

2y=4x+8

y=2x+4

 

The slope is 2

Term

 

 

 Simplify 2(x+6)+3x

Definition

 

2(x+6)+3x

2(x)+2(6)+3x

2x+12+3x

(2x+3x)+12

5x+12

Term

 

 

How many quadrants are there in the coordinate plane?

Definition

 

 

4,

 they are arranged counter clockwise

Term

 

 

An ______ is a mathematical statement that two expressions are equal.

Definition

 

 

 

equation

 

 

Term

 

 

 Solve the equation

 

x-10=4

Definition

 

 

x-10=4

x=14

You can check your answer by putting 14 back into the original equation as x.

Term

 

 

Solve the equation

 

-4=k/-5

Definition

 

 

-4=k/-5

-4(-5)=(k/-5)(-5)

20=k

Term

 

 

Solve the equation

 

4x=28

Definition

 

 

4x=28

4x/4=28/4

x=7

Term

 

 

Solve the equation

 

6x+3-8x=13

Definition

 

 

6x+3-8x=13

-2x+3=13

-2x=10

x=-5

Term

 

 

Solve the equation

 

7k=4k+15

Definition

 

 

7k=4k+15

3k=15

k=5

Term

 

 

A _______ is an equation that states a rule for a relationship among quantities.

Definition

 

 

 

formula

Term

 

 

Solve m-n=5 for m

Definition

 

 

m-n=5

m=n+5

Supporting users have an ad free experience!