Pre-Algebra : Operations
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Example Questions
Example Question #1 : Divide Integers: Ccss.Math.Content.7.Ns.A.2b
When two negative numbers are divided, the answer is positive. Divide normaly. Answer is 
Example Question #2 : Divide Integers: Ccss.Math.Content.7.Ns.A.2b
When a positive number and a negative number is divided, the answer is negative. Just divide normally. Answer is 
Example Question #41 : Negative Numbers
There are three negative numbers. If there is an odd number of negative numbers being divided, our answer is negative. Since three is odd, our answer is negative. We divide from left to right. Answer is 
Example Question #42 : Negative Numbers
There are three negative numbers. If there is an odd number of negative numbers being multiplied, our answer is negative. Since 
Example Question #1 : Add And Subtract Rational Numbers: Ccss.Math.Content.7.Ns.A.1d
Subtract:
Eliminate the double negatives first.
Double negatives will result in a positive sign.
Simplify the terms.
Example Question #263 : Operations
Solve:
In order to evaluate this expression, first square the terms inside the parentheses.
Multiply the terms inside the parentheses.
Simplify.
Example Question #5 : Understand Distances Between Numbers On A Number Line: Ccss.Math.Content.7.Ns.A.1b
When a plus and minus sign meet, we have a minus sign.
Since 
We treat as a normal subtraction.
Answer is 
Example Question #264 : Operations
Since 
We treat as a normal subtraction.
Another way to look at this problem is looking at the number line and starting from negative nine move to the right twelve spaces.
Answer is 
Example Question #264 : Operations
When adding two negative numbers, we treat as an addition problem and add the minus sign in the end.
Add the ones digits together:
Add the tens digits together:
Combine the ones and tens digit to get final answer.
Answer is 
Example Question #6 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c
Two minus signs become a plus sign. It's now an addition problem.
Add the ones digits together:
Add the tens digits together:
Combine the ones and tens digit to get final answer.
Answer is 
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