## Wednesday, March 23, 2011

### rowell's Great Big Book of Integers post

Chapter 1 Grade 7 Integer Review

Include positive and negative whole number and zero

Integer chips are colored disk that represented by integer
Ex;+1 and -1

zero pair includes one + and one - .
zero pair represented zero .
Integer addition can model using integer chips or diagram.

Ex; +1 + -1 = 0

CHAPTER 2 Multiplying Integers

Sign Rule (negative signs):
Even = When you have an even number of negative factors, the product is positive.
Odd = When you have an odd number of negative factors, the product is negative.

ex; (-2) x (-5) = +10
remove 2 groups of negative 5

Chapter 3 Dividing Integers

Sign Rule: If you have no negative or an even number of negative signs
in a division question, the quotient is positive.

There are 2 types of division
Partitive Division or making parts
ex; 6 /2=3 (make two parts of six)

Quotative Division or sharing your total with groups
ex; (-6) / 2 =-3 share 6 with 2 groups

Chapter 4 Order of Operations with Integers

The order of Operations is called BEDMAS :
Brackets, Exponents, Division, Multiplication, Addition, Subtraction.

ex;
(+5) -(-3) + (-6) / (+3)
- [5 - (-3)] + [-6 / 3]
-(8) + (-2)
- 6

Order of Operations
-Solve terms in brackets first
-Multiply and Divide from left to right
-Add and subtract from left to right