Math

Question 1

sum

Answer 1

addition

Question 2

product

Answer 2

multiplication

Question 3

quotient

Answer 3

division

Question 4

difference

Answer 4

subtraction

Question 5

mean

Answer 5

average

Question 6

what do you do when given the average

Answer 6

sum=(average)(quantity)

Question 7

median

Answer 7

middle number (must be in order)

Question 8

mode

Answer 8

most frequent number

Question 9

range

Answer 9

biggest number minus the smallest

Question 10

how do you find “halfway” between two numbers?

Answer 10

take the average

Question 11

how do you setup a proportion?
“this is to that as this is to that “
2 cups = 3 eggs
5 cups = ? eggs

Answer 11

2 cups/3 eggs = 5 cups/x eggs
think meow/cat = bark/dog
or
2 cups/5 cups = 3 eggs/x eggs

Question 12

whole numbers

Answer 12

0,1,2 . . .

Question 13

natural numbers

Answer 13

1,2,3

Question 14

integers

Answer 14

-2,-1,0,1,2

Question 15

rational

Answer 15

can be a fraction ie: 2, 5, 5 etc

Question 16

irrational

Answer 16

cannot be a fraction ie: ℼ √2

Question 17

complex

Answer 17

aka imaginary “i”

Question 18

what is the percent ratio?
how do you turn a percent- decimal?
what is 30% of 120?
(what does “of”mean?)

Answer 18

is/of=percent/100
move decimal left twice (32% = .32)
30% of 120= .30 x 120 = 36

Question 19

percents
discounts and tips
20% off and %15 tip

Answer 19

20% off =80% remaining = (80) (#)
15% tip= 115% remaining = (1.15) (#)

Question 20

1,800 is 60% of what?

Answer 20

1800/x = 60/100 –> x=3,000

Question 21

How many integers between 1 and 16

Answer 21

14
How?
first test a smaller interval
find the pattern
apply it to the actual question

Question 22

what does inclusive mean

Answer 22

including exponents

Question 23

interquartile range

Answer 23

IQR: Q3-Q1

Question 24

do you know how to read stem & leaf plots?

Answer 24

2 l 1 3 4
21, 21, 23, 24

Question 25

what would your first step b when simplifying 3-(2x+2)

Answer 25

3-(2x+2) distribute the minus sign 3-2x-2 = 1-2x

Question 26

what are factors

Answer 26

*you can only cancel factors factors are what is being multiplied ie: 10: 1,2,5,10

Question 27

what are multiples

Answer 27

multiples are the products when multiplying by 1,2,3 . . . etc. ie:10: 10,20,30 . . . etc.

Question 28

Pythagorean theorem and when do you use it what is c always equal to

Answer 28

a^2+b^2=c^2 to find the third side of a right triangle c is the hypotenuse

Question 29

distance rate & time

Answer 29

"dirt" D=RxT R= something per something

Question 30

converting units

Answer 30

30 inches x 1 ft/ 12 in. = 30/12 feet

Question 31

what is a prime number

Answer 31

only divisible by one

Question 32

what is the first/smallest prime number? 0,1,2

Answer 32

2

Question 33

what does "distinct" mean? ie: distinct prime factors of 80

Answer 33

distinct=different/separate prime factors: 2 x 2 x 2 x 2 x 5 distinct prime factors: 2 and 5

Question 34

absolute value 1. Always equal to? 2. mathematically solve

Answer 34

first solve then make positive 1. lanythingI =0 2. lxl = 3 (x=3, x=-3) lxl < 3 (x<3 x>-3 less th"and" lxl > 3 (x>3, x<-3) great"or"

Question 35

what is the cost equation? $500 fee & $25/day

Answer 35

y= fees + (price per something)x y=500+25x

Question 36

how do you calculate distance

Answer 36

subtraction

Question 37

what is the equation of a line "linear"

Answer 37

y=mx+b m= slope b= y-intercept

Question 37

how do you solve for the slope? what is "rate of change"?

Answer 37

m= subtract the y's/subtract the x's=y2-y1/x2-x1

Question 38

distance between two points

Answer 38

d√(x2-x1)^2+(y2-y1)^2

Question 39

how do you solve for the midpoint? (-2,4) (1,8)

Answer 39

(average the x's, average the y's) (-2+1/2, 4+8/2)= (-1/2, 6)

Question 40

given an endpoint and the midpoint how do you find the second endpoint? endpoint (1,6) midpoint (3,-2) endpoint (?,?)

Answer 40

x-values: 1+2=3 so, 3+2=5 y-values : 6-8=-2 so, -2-8=-10 endpoint: (1,6) midpoint: (3,-2) endpoint: (5, -10)

Question 41

how do you graph 4=2×-3 ?

Answer 41

1. plot the y-intercept (0, -3) 2. up to over 1 for the next point

Question 42

how do you graph y< 2×-3 vs . y ≥ 2×-3

Answer 42

y< 2×-3 (< means dotted line shade below) y ≥ 2×-3 (≥ means solid line shade above)

Question 43

How do you solve for the y-intercept and x-intercept 2x+3y=4

Answer 43

x-intercept : Plug in y=0 and solve for x (#,0) y-intercept: plug in x=0 and solve for y (0, #)

Question 44

when solving inequalities, what do you need to remember?

Answer 44

flip direction of the sign when you multiply or divide both sides by a negative

Question 45

probability what does "and" & "or" mean?

Answer 45

number of desired outcomes/ number of total outcomes and = multiply or = add