All Pre-Algebra Resources
Example Questions
Example Question #132 : The Number System
When multiplying with two negative numbers, our answer is positive.
Answer is
Example Question #301 : Operations
When there are odd amount of negative numbers, the answer is negative when multiplied. Since three is odd, our answer is negative. We multiply from left to right.
Answer is .
Example Question #6 : Divide Integers: Ccss.Math.Content.7.Ns.A.2b
When dividing with a negative number, our answer is negative.
Answer is .
Example Question #7 : Divide Integers: Ccss.Math.Content.7.Ns.A.2b
When dividing with two negative numbers, our answer is positive.
Answer is
Example Question #302 : Operations
When dividing with an odd amount of negative values, our answer is negative. Since two is not odd, our answer will be positive. We divide from left to right.
Answer is .
Example Question #18 : Understand Distances Between Numbers On A Number Line: Ccss.Math.Content.7.Ns.A.1b
Solve:
When adding with negative values, the sign turns negative. So now we have . Since they have the same sign, we just treat it as an addition problem and add and then insert the negative sign in front. The answer is .
Example Question #19 : Understand Distances Between Numbers On A Number Line: Ccss.Math.Content.7.Ns.A.1b
Solve:
When dealing with negative numbers, let's see which number is greater. is greater than and is positive so the answer is positive. We treat this as a subtraction problem. .
Example Question #11 : Subtract Rational Numbers And Understand The Absolute Value Of Their Difference: Ccss.Math.Content.7.Ns.A.1c
Solve:
When subtracting with a negative sign, it turns into addition. Now we have . The answer is .
Example Question #4 : Add And Subtract Rational Numbers: Ccss.Math.Content.7.Ns.A.1d
Solve:
Let's work from left to right since it's only subtraction and addition. Since is greater than and it's positive our answer is positive, but we treat this like a subtraction problem because the is negative. . Now we have . is greater than and it's negative so our answer is negative and we treat this like a subtraction problem. , but since our answer should be negative our answer is .
Example Question #91 : Negative Numbers
Solve:
When multiplying two negative numbers, the negative signs cancel each other out, making for a positive solution. If only one number is negative, the solution will be negative.
Therefore we can rewrite as , which is .
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