Pre-Algebra : Operations and Properties
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Example Questions
Example Question #2 : Understand Distances Between Numbers On A Number Line: Ccss.Math.Content.7.Ns.A.1b
When dealing with negative numbers, let's see which number is greater. 
Example Question #6 : Solve Problems With The Four Operations With Rational Numbers: Ccss.Math.Content.7.Ns.A.3
We need to take care of the parentheses first because of PEMDAS. Parentheses has priority over everything. The product is 
Example Question #1 : Solve Problems With The Four Operations With Rational Numbers: Ccss.Math.Content.7.Ns.A.3
Remember PEMDAS. Parentheses comes first then multiplication. 
Example Question #8 : Solve Problems With The Four Operations With Rational Numbers: Ccss.Math.Content.7.Ns.A.3
Remember PEMDAS. Parenthesis comes first then multiplication. 
Example Question #3 : Understand Distances Between Numbers On A Number Line: Ccss.Math.Content.7.Ns.A.1b
Solve:
Remember that adding a negative number is the same as subtracting that same number if it were positive.
Example Question #22 : Negative Numbers
Solve:
When you multiply a negative by another negative, the answer will be positive. If you multiply a third negative number, the answer becomes negative again. The rule is:
1. multiplication of an EVEN number of negative numbers = positive number
2. multiplication of an ODD number of a negative numbers = negative number
Therefore,
Example Question #2 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c
Solve:
Remember that subtracting a negative number is just like adding the positive of that number, because you move to the right (more positive) on the number line. Therefore
Example Question #3 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c
Subtract:
Distribute the negative sign through the parentheses. Double negatives equal a positive.
The answer is 
Example Question #244 : Operations
Solve:
To evaluate this, first simplify the innermost parentheses.
Distribute the negative two in front to term inside the parentheses.
Example Question #1 : Add And Subtract Rational Numbers: Ccss.Math.Content.7.Ns.A.1d
Evaluate:
Break up the parentheses. Double negatives result in a positive sign, and positive with a negative sign will result in a negative sign.
Next, simplify by adding and subtracting each component from left to right.
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