Range

Range-positive difference between largest and smallest values

3,4,7,9,14,16,18
3-18=15


15 is the range

Variables

Variable is an unknown number

expression contains variables ,operations, and numbers, in any combination.

Circle Formulas

C=(3.14)d
C=2(3.14)r
D=2r
A=(3.14)r2

Integers

negative numbers represent values below zero positive numbers represent values above zero

example-above and below, ground or sea level
(-2)+1=1
3-(-1)=4

Outlier

Outlier-values that are too big or too small compared to the other values

9,28,35,47,69

9 is the smallest
69 is the biggest

Transformation

Transformation

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

Divisibility Rules

Divisibility-when a number can be divided by another number, with no remainder or decimal; it is a whole number

1-all numbers
2-even numbers
3-sum of the digits is divisible  by 3
4-divisible by 2 twice
5-ends in a 0 or a 5
6-divisible by 2 and 3
7-nothing
8-divisible by 2 thrice
9-sum of the digits is 9
10-ends in 0

Median

Median-the middle in a set of data

69 is the median

Mean

Mean-add up all the values then divid by the set of data

1,2,3,4,5,6,7,8,9

1+2+3+4+5+6+7+8+9=45

The mean is 45

Mode

Mode is the number that repeats the most in a set of data

34,45,58,70,22,22,22

22 is the mode

Textbook

4.
a) 10% of 25

b) 25% of 84

c) 50% of 98

d) 75% of 124

Math Textbook

Today's BEDMAS question:

Heres a video:

here's a link that can help you with order of operations:

http://cemc2.math.uwaterloo.ca/mathfrog/english/kidz/order.shtml