Mode

Mode is the value that shows up the most
The mode in 1134455555567778910101010 is 5 because it shows up the most
The mode in 728923461226771923 is 2, first you should put the values in least to greatest so its easier to find the answer

Integers

Negative numbers represent value below zero and positive numbers represent value above zero.
Opposite integers have the same numeral but a different sign
eg. (-4) and 4

Area of a Triangle

A= bxh/2
Base is the bottom line
Height is a right angle to the highest point

Transformations

Translation is a slide along a straight line
Rotation is a turn about a fixed point
Reflection is a mirror image

Probability

Experimental Probability is when you actually do the experiment
Theoretical Probability is what you expect to happen

Quadrant Symbols

(+,+) Quadrant 1
(-,+) Quadrant 2
(-,-) Quadrant 3
(+,-) Quadrant 4

For example, (-2,-4) would be in Quadrant 3

Circle Formulas

C= πd                           C= 2πr                          A= πr squared                        D= 2r


Area is the measure of  space a 2 dimensional shape covers
π = pi (3.14)
C = circumference
D =  diameter 
R = radius

Ordering Decimals

If you have trouble if ordering decimals check out this video

Value and Constant

Value is a known calculated amount

A Constant is a number that doesn't change and increase or decreases the value of an expression

Numerical Coefficient

A Numerical Coefficient is a number that multiplies the variable

eg. 2t

Variables and Expressions

A Variable is a letter that represents an unknown number

eg. x,a,n

An Expression is any single number or variable or combination of operations involving numbers and variables

eg. 5,n,8t,1,2y-7

Divisibility Rule for 4

4=2x2 all numbers that are divisible by 2 twice are divisible by four.

eg. 235128 is divisible by four because its divisible by 2 twice.

235128 divided by 2 is 117564

117564 divided by two is 58782

Number of the Day #21

Use any two digits to make a proper fraction

eg. 7634.29

For it to be a proper fraction, the numerator (top number) always has to be smaller than the denominator (bottom number)

Page 137 #5

Convert each fraction into a decimal

a. 13 over 25= 0.5

13÷25= 052 round to the nearest tenth = 0.5

b. 107 over 215= 0.50

107÷215= 0.49766744 round to the nearest thousandth = 05.50

c. 43 over 50= 0.9

43÷50= 0.86 round to the nearest tenth

d. 197 over 289= 0.6816608

197÷289= 0.680 round to the nearest thousandth

Order of Operations

4×3+12÷2
12 + 12÷2

12 + 6

18

First do the multiplication 4x3=12

then bring everything else down

then do the division 12÷2=6

after than bring all the rest down

do the addition 12+6=18

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