## Monday, March 7, 2011

### Justins Great Big Book Of Integers

Chapter 1 Grade 7 Integer Review

Questions:
-6- (-4)=-2
-10+6=-4
6-7-2=1
14- (-3)=17

Multiplying Integers

This question is saying to add two groups of positive 3's

This question is saying to add two groups of negative 3's

This question is saying to take away 2 groups of positive 3's, I used zero pairs to do that.

This question is saying to take away 2 groups of negative 3's, I used zero pairs to do that.

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

Dividing Integers

If you have no negative or an even number of negative signs in a division question the quotient is positive
Ex ( 6 ÷ 3 =2 )

6÷3=2 <--- share 6 with 3 groups ( quotative division or sharing your total with groups )

6÷ 3=2 <--- how many groups of 3 are in 6 ( Partitive division or making parts )
When you have an odd number of ( - ) signs in a division question the quotient is negative

sign rule for division
6÷2=3 <---- how many 2's are in 6?

-6÷ (-2)= 3 <--- if there is an even amount of negatives the answer is positive

(-6)÷2= -3 <---- if there is an odd amount of negatives the answer is negative

6÷(-2)= -3 <---- if there is an odd amount of negatives the answer is negative

Order of Operations with Integers

(+5) x (-3) + (-6) ÷ (+3)
[(+5) x (-3)] + [(-6) ÷ (+3)]
-15+ (-2)= -17