## Saturday, March 19, 2011

### Maya's Great Book of Integers

Chapter 1 - Grade 7 Integer Review

Integers
- Number lines
- Integer chips
- Zero pair

- Positive and negatives ( + and - )
- "When subtracting something that isn't there, use a zero pair."

-6 - (-4) = -2
-10 + 6 = -4
14 - (-3) = 17
-3 - (-7) = 4
-3 - 7 = 10
3 -7 = 4
3 +7 = 10
-3 +7 = 4

Chapter 2 - Multiplying Integers

(+2) x (+3) = 6
(+2) x (-3) = -6
(-2) x (+3) = -6
(-2) x (-3) = 6

Chapter 3 - Dividing Integers

When you have an off number of negativ e signs in a division question, the quotient is negative.
If you have no negative or even number of negative signs in a division question, the quotient is positive.

Here is an example from our notes:

6 / 2 = 3
-6 / (-2) = 3

Quotative Division or sharing your total with groups.

Here is an example of what we did in class:

Chapter 4
- Order of Operations with Integers

(+5) x (-3) + (-6)/ (+3)

First, you make a box around (+5) x (-3) so it's 5 groups of negative 3.

That would equal -15.
Then, you put a box around (-6) / (+3)
How many groups of positive 3 would be in negative 6?
Negative 2.
So, -15 + -2 = -17.