Divisibility Rules

1- all numbers
2- even numbers
3- sum of the digits is divisible by 3
4- divisible by 2 twice
5- ends in 0 or 5
6- divisible by 2 and 3
7- none
8- divisible by 2 thrice
9- sum of the digits is 9
10- ends in 0

Intersecting

intersecting means two lines that never meet

Parallel

parallel lines
 two lines on the same plane that never meet
 < means there parallel

Perpendicular Bisector

perpendicular bisector
 two intersecting lines that meet at 90°

 separated into 2 equal parts

Transformations

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

Definitions

Mean- add up all the values divide by how many values there are

Median- the middle number in a set of ordered values might be the mean of 2 middle values

Mode- the value that shows up the most

Range- positive differences between largest and smallest values

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

Definition of expression

expression: any single number or variable, or combination of operations involving numbers and variables.

example: x+2

Number Of The Day 9/2/12

Number: 3978.654

8. Write a power using the digit in the 100th place as the base and the digit in the 10s place as the exponent:

9. Write the power above in factored form: 5x5x5x5x5x5x5

Homework Book page 76 #3

Common Denominators

3. To write fractions with common denominators, determine equivalent fractions. For example,

Number Of The Day 9/2/12

Number of the day: 3978.654

21. Use any two digits to make an proper fraction:

4/5 (four fifths)

23. Write the answer to number 21 as a decimal:

O.8

25. Write the answer to number 21 as percent:

8O%

Homework book #5 page 71

Subtract Fractions With Like Denominators

5. Determine each difference.

Write your answer in lowest terms.

Textbook #8 Page 214

Write each addition statement shown by the diagrams.

Then add. Write your answer in lowest terms.

Textbook 7. Page 214

Write each addition statement shown by the diagrams.

Then add. Write your answer in lowest term.

Chapter 4 review

Page 124

4.

Math Textbook Page 138

9. Write each repeating decimal number

using bar notation.

a) 0.4444444… b) 0.2666666…

c) 0.1851851… d) 1.0626262…

Order of Operations

Math

4x3+12/2

12+12/2

12+6

18