The sign rules are:
If theres two of the same integers (+,-) it means the answer is positive
eg. (+4)+(+9)=+13
If the signs are different (+,-) the answer would be negative
eg. (-4)-(+9)=-13
The sign rule only works while using subtracting, dividing, multiplying, and adding
Examples:
(1.)(+4)+(+9)=+13 (2.)(-4)-(+9)=-13
(3.)(-4)-(-9)=+5 (4.)(+3)x(+2)=+6
(5.)(+3)x(-3)=-9 (6.)(-5)x(-5)=+25
(7.)(-8)÷(+4)=-2 (8.)(-8)÷(-4)=+2
(9.)(+8)÷(-4)=-2
Sentences for both multiplying and division are:
Multiplying sentences always go with groups of, like:
eg. 3 groups of +2 or +6
Dividing sentences always go with either Share no. into no. equal groups or how many groups of no. are in no., like:
eg. Share -8 into +4 equal groups or -2
eg. how many groups of -4 are in +8 or -2
These are the multiplying and dividing diagrams:
But Dividing has so much diagrams based in sentences, like:
And Dividing also has some division that can't use one of the two statements, like:
eg. (-8)÷(-4)=+2
How many groups of (-4) are in (-8)/ can't use "share" statements/ CAN BE DIAGRAMED
eg. (+8)÷(-4)=-2
How many groups of (-4) are in (+8)/ can't use "share" statements/ CAN BE DIAGRAMED
And then there's something called the Multiplicative Inverse
Which means the multiplication statement can't be diagramed like this question, but can be stated.
eg. (-4)x(-2)=+8
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