## Tuesday, January 14, 2014

### Julius' scribe post

Julius' scribe post

Multiplying Integers

first we learned to multiply two positives together. To multiply positives you multiply them. But you have to show your work.

For example:

(+3)x(+4)= +12

to show your work you have to write out: (number) groups of (number)

(+3)x(+4)=+13
3 groups of 4

You also have to model the question. To model you must have a certain number of groups containing a certain number of positives/negatives. But it is not a group unless you circle the groups. Then show that they are arriving

(++++) (++++) (++++)<-------

Multiplying negatives

To multiply negatives you do the same thing except with a negative.
For example:

(2)x(-3)= -6
2 groups of negative 3

(---) (---)<----

If the first number is a negative then the words start with remove

(-4)x(3)= -12
remove 4 groups of 3
to do this we need to have zero pairs
--- --- --- ---
(+++) (+++) (+++) (+++)
then make 4 groups of 3 positives. And then show that the positives/negatives are going away by making a arrow pointing away from the groups.
(+++)----> (+++)-----> (+++)-----> (+++)---->

f you are still feeling confused here is a video

feel free to criticize and correct me

#### 1 comment:

1. Great job Julius, i really liked how you explained what to do and kept it short and easy to understand. I also think the way you described multiplying negative and positive integers, i really understood your concept.

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