Grade 7 Integer Review
Questions for class
-6 - (-4) = -2
-10 + 6 = -4
6 - 7 + 2 = 1
14 - (-3) = 4
- 3 - (-7) = 4
- 3 - 7 = - 10
3 - 7 = - 4
3 + 7 = 10
- 3 + 7 = 4
Chapter 2
Multiplying Integers
(+2) x (+3) = 6
"make 2 groups of (+3)"
(+2) x (-3) = -6
"make 2 groups of (-3)"
(-2) x (+3) = -6
"remove 2 groups of (+3)"
(-2) x (-3) = 6
"remove 2 groups of (-3)"
Sign Rule (negative signs)
Even = When you have a even number of negative factors your product is positive.
Odd = When you have a odd number of negative factors your product is negative.
Chapter 3
Dividing Integers
Partitive Division - when you use groups to find your quotient.
6 ÷ 2 = 3
(-6) ÷ (-2) = 3
Quotative Division - share numbers with specific groups
(-6) ÷ 2 = -3
Chapter 4
Order of Operations
(+5) x (-3) + (-6) ÷ (+3)= ?
- Always do multiplication and division first
- Put square brackets around (+5) x (-3) ex. [(+5) x (-3)]
- Put square brackets around (-6) ÷ (+3) ex. [(-6) ÷ (+3)]
- Solve (-15) + (-2) = -17
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