mtel math flashcards

Question 1

Euler’s Formula

Answer 1

Used for polyhedrons (3D shape)

V + F - E = 2

Question 2

How to find edges on a polyhedron

Answer 2

Edges = (# of sides on a face) X ( # faces) / 2

Question 3

Surface Area Formula

Answer 3

SA=2LW+2LH+2HW

Question 4

Box + Whisker Plot or Box plot

Answer 4

• 4 quadrants (Q1, Q2, Q3, Q4) all rep. 25% of the data

- you can see min, max, median, and median of q2 and q3

Question 5

Pick’s Theorem

Answer 5

-Used to find the area of an irregular polygon
- A=B/2 + I -1
B=border points or line of intersection or pegs on outside
I=Inside points

Question 6

Net

Answer 6

2D representation of a 3D figure

Question 7

Mean

Answer 7

Average: add up #’s and divide by how many #’s there are

Question 8

Median

Answer 8

Middle #. If there are 2 in the middle, add them up and divide by 2

Question 9

Mode

Answer 9

Most repeating number

Question 10

Probability

Answer 10

Part/Whole

Question 11

Link Probability

Answer 11

-When you are trying to find 2 options, multiply them together
part/whole * part/whole

Question 12

Slope-intercept form

Answer 12

y=mx + b

m: slope
b: y-intercept

Question 13

Slope

Answer 13

M= Rise/ Run

y2-y1/ x2-x1

Question 14

Common Conversions

Answer 14

12 inches=1 foot
36 inches=1 yard
5,280 feet=1 mile
3 feet=1 yard 
1,760 yards= 1 mile

Question 15

Equilateral Triangle

Answer 15

All sides and angles are equal

Question 16

Congruent

Answer 16

Identical figures (same angles and same sides

Question 17

Shapes that are Similar

Answer 17

sides are big or smaller, but angles are the SAME

Question 18

Symmetry

Answer 18

Mirror image in respect to a reflection

Question 19

Rhombus

Answer 19

sides are the same, but angles are different!!

Question 20

Supplementary Angles

Answer 20

2 angles on a straight line that add up to 180 degrees

Question 21

Complimentary Angles

Answer 21

Sum is 90 degrees. Like the corner of a shape

Question 22

Angles of a triangle

Answer 22

inside angles add up to 180 degrees

Question 23

Relative Prime #’s (co-prime)

Answer 23

Numbers that share no common divisor (except 1) aka they have a GCF of 1

Question 24

Distance Formula

Answer 24

D=rate*time

***divide by 2 to get the average speed

Question 25

Polygon

Answer 25

2D, closed shape, straight lines

Question 26

Scientific Notation

Answer 26

• anything to the 0 power is 1
• a negative exponent should be flipped to a fraction (and decimal point would be moved to left instead of right)
• every-time you multiply by 10, you shift the decimal point to the right once

Question 27

Least common Multiple (LCM)

Answer 27

When doing the ven diagram method, multiple all the numbers in the diagram. GCF is only the ones in the middle

Question 28

Factors vs. multiples

Answer 28

Factors: the #’s that are multiplied to get a given # (always fewer because there are a set # of ways to multiple to get a #)
Multiples: the #’s you say when you skip count by a given # (always will be more) numbers r infinite!

Question 29

Isoscles Triangle

Answer 29

2 equal sides

Question 30

Inverse Relationship

Answer 30

y=k/x

as x increases, y decreases
as x decreases, y increases
k=constant of portion or rate

Question 31

Direct Relationship

Answer 31

y=k*x

k=the constant or rate

Question 32

Functions

Answer 32

x: input
y: input
- 1 input can only have 1 output
- do the vertical line test. it should only intersect ONE time

Question 33

Distributive property

Answer 33

a(b+c) = ab + ac
or
a(b+c+d)=ab+ac+ad

Question 34

Commutative property

Answer 34

think of 2 terms! Adding or multiply these 2 terms is always going to get you the same answer!

a + b = c so b + a = c
or
a X b =c so b X a =c

Question 35

Associate Property

Answer 35

thinking of a condo association. the order in which #’s are grouped does not affect sum or product. 3 or more terms!

(a + b) + c = d
a + (b+c) = d

Question 36

Additive identity property

Answer 36

if u add 0 to an addend, the sum will equal the addend

Question 37

Multiplicative identity

Answer 37

if u multiply by a factor of 1, the product will equal that factor

Question 38

GCF

Answer 38

when doing the venn diagram, multiply the numbers in the MIDDLE. do prime factorization first.

Question 39

Rational Number

Answer 39

• # ’s that can be represented as a fraction
• fractions, percents, integers, decimals
• Rat X Rat = Rat
• ALWAYS A RAT

Question 40

Irrational Number

Answer 40

• any # that cannot be expressed as a simple fraction
• does not have terminating or repeating decimals
• example: square roots of non-prime #’s
• pie (3.14)
• irrational/irrational can give you a RAT

Question 41

Volume of a prism

Answer 41

V = lwh

Question 42

Volume of a cylinder

Answer 42

V = pier^2h
or
V=piedh

Question 43

Area of a circle

Answer 43

A=pier^2
or
A=pied

Question 44

Circumference of a circle

Answer 44

2pier
or
pie*d

Question 45

pythagorean theorem

Answer 45

• only works for right triangles

- a^2 X b^2=C^2

Question 46

Base 10, 5, 3

Answer 46

Put the # in boxes. starting at whatever base they ask for and start with that base times to the 0,1,2,3,4 power. then add up the answers. this is a place value question.

Question 47

Arrays

Answer 47

Fraction X Fraction

Question 48

Bisect

Answer 48

divide into equal parts

Question 49

Parallel Lines

Answer 49

Lines that will never cross. When trying to find a line that is parallel to another line, the slope will be the SAME

Question 50

Perpendicular Lines

Answer 50

Lines that will intersect. When finding the slop of a perpendicular line, the slope will be OPPOSITE of the other line.

Question 51

Area of a trapezoid

Answer 51

A=1/2(b1 + b2)h