Adding and Subtracting Integers
Chapter 2:
Multiplying Intergers
Examples:
(+3)x(+2)= 3 groups of 2
repeated addition
2+2+2= +6
two groups of +3
(2)x (+3)=
Questions
(+2)x(+3)= +6
2 groups of (+3)
(-2)x(+3)= -6
Sign Rules
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
Chapter 3:
Dividing Integers
Partitive Division is when you use groups of to get to your quotient.
6/2=3
(-6)/(-2)= +3
Multiplicative Inverse is when you use multiplication to figure out your quotient.
6/(-2)=
(-2)x(-3)=6
(-3)x(-2)=6
Means 6/(-2)=(-3)
Sign Rules
In a divison question with an even amount or no negative signs the quotient will be positive.
example: 6/2=3
(-6)/(-2)=3
In a divison question with an odd number of negative signs the quotient will be negative.
example (-6)/2=3
6/(-2)= (-3)
Chapter 4
Order of Operations with Intergers
(+5)x(-3) + (-6)/(+3)=
Scince there are no square brackets or exponents we should start with division and multiplication going from left to right.
[(+5) x (-3)] +[(-6)/(+3)]=
(-15)=(-2)=
After your done with division and multiplication you should do the addition
(-15)+(-2)=(-17)
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