Here is what we did in class. First, we discussed on how we could solve a integer problem.
We can ...
use a number line :
Or integer Chips :
We also discussed Zero Pairs.
Zero Pairs : A pair of numbers that has a sum of zero. Something really easy to remember is .....
" When subtracting something that isn't there use a zero pair. "
Questions we did in Class :
Question one :
Question Two :
Chapter Two :
(+2) x (+3) = +6
(+2) x (-3) = -6
(-2) x (+3) = -6
(-2) x (-3) = +6
Chapter Three :
Partitive division : is groups of.
Queston one :
6/2 = 3
How many groups of (+2) are in (+6)
(-6)/(-2)= -3
Quotative division : spliting something between a number of groups.
(-6)/2= -3
Chapter Four :
Order of operations:
(+5)x(-3)+(-6)/(+3)=
I rewrote it and got
(+6)x(-3)+[(-6)/(+3)]=
My answer (-18)
How I solved it :
First :
(-6)-(+3) = -3
- - - - - -
+ + +
Then three times there is a zero pair : then you are left with -3. Then I solve the second part of my question.
(+5)x(-3) = (-15)
(-3) + (-15) = (-18)
Then I add both answers together and I got (-18)
THE END !!
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