Monday, March 14, 2011

Angelique's Great Big Book of Integers

Grade 7 Integer Review
Integers
-integer chips
-negative and positive numbers
-zero pair (+, -)

When something that isn't there, use a zero pair.


Questions:

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

-3-(-7)= +4

-3-7=4

3-7 = -4

3 + 7 = 10

-3+7=

Chapter 2 - Multiplying Integers
Sign Rules - Even: When you have an even number negative factors the product is positive.
Odd: When you have an odd number of negative factors the product is negative.

(+2) x (+3) =
(2) x (3) =
(2)(3)=6 : standard form
2 (3) = 6

(+2) x (+3) = 2 groups of (+3) = 6

(+2) x (-3)
(-2) x (+3) = Remove 2 Groups of (+3)

(-2) x (-3)

Chapter 3 - Dividing Integers

What is Partitive Division?
Partitive Division is when you know the total numbers of groups, and you are trying to find the number of items in the groups.
6÷2=3
-6÷(-2)=3

What is Quotative Division?
Quotative Division is the number in each group, but you don't know the number of groups there are.
(-6)÷2=

You can find the answer to a question using multiplicated inverse.
In a division question with an amount or no (-) sign the quotient will be postitive.
If there is and odd number of negative signs the quotient will be negative.

Chapter 4 - Order of Operations with Integers

(+5) x (-3) + (-6) ÷ (+3)=
To answer we use BEDMAS
Brackets, Exponents, Division, Multiplication, Adding, Subtracting


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