Questions from class
1) -3 - (-7)=4
2) -3 - 7=-10
3)3 - 7=-4
4) 3 + 7=10
5) -3 + 7 = 4
Chapter 2 Multiplying Integers
1) (+2) x (+3)= 6
+++ +++ 2 groups of +3
2) (+2) x (-3)= -6
--- --- 2 groups of -3
3) (-2) x (+3)= -6
4) (-2) x (-3)= +6
Sign Rule (Negative Signs)
Even: When you have an even number of negative factors the product is positive.
Odd: When you have a odd number of negative factors the product is negative.
Chapter 3 Dividing Integers
Partitive Division: When you use groups to find your quotient
ex. 6 ÷ 2= 3
-6÷ (-2)= 3
Quotative Division: Share a number between an amount of groups
ex. (-6)÷2= -3
Multiplicative Inverse: When you rewrite a division question to a multiplication question because you can't find a way to use partitive or quotative division.
ex. 6÷(-2)=
you can't share 6 with -2 people so you use the multiplicative inverse
(-2)x(-3)=6
(-3)x(-2)=6
answer: -3
Chapter 4 Order of Operations with Integers
(+5) x (-3) + (-6) ÷ (+3) = ?
You can use BEDMAS to solve this question
BEDMAS stands for:
B-Brackets
E-Exponents
D-Division
M-Multiplication
A-Addiction
S-Subtraction
Ex.
There are no brackets or exponents so you could skip the B and the E.
There is a division question and that is (-6) ÷ (+3).
(-6) ÷ (+3) = -2.
The question now is (+5) x (-3) + (-2) = ?
There is a multiplication question and that is (+5) x (-3).
(+5) x (-3) = -15
The question now is (-15) + (-2)
Now all you have to do is solve (-15) + (-2).
(-15) + (-2) = -17.
Your answer is -17
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