Pre-Algebra › Operations and Properties
Simplify the following as far as possible:
If we use the foil method we get the following:
First:
Inner:
Outer:
Last:
If that is simplified we're left wiht
Solve:
When two negative numbers are being divided, our answer is positive. The quotient is .
Solve:
When multiplying with a positive number and a negative numberr, our answer is negative. The product is .
Solve:
When two negative numbers are being divided, our answer is positive. The quotient is .
Solve:
When solving this problem, remember order of operations PEMDAS. The parentheses come first, followed by the multiplication, and then the division.
Select the equation that reflects the phrase below.
First add and
, then multiply by
.
Because we want to add and
first, we need to set that off into parentheses due to the order of operation rules. Then we can multiply by
.
Which of the following statements demonstrates the associative property of addition?
None of the examples in the other responses demonstrates the associative property of addition.
The associative property of addition states that to add three numbers, any two can be added first, followed by adding the sum to the third. Of the statements given, only
demonstrates this property, so it is the correct choice.
Solve:
When solving this problem remember our orders of operation, or PEMDAS.
PEMDAS stands for parentheses, exponents, multiplication/division, and addition/subtraction. When you have a problem with several different operations, you need to solve the problem in this order and you work from left to right for multiplication/division and addition/subtraction.
Evaluate the quantities inside the parentheses first.
We have two positive numbers and one negative number. We work from left to right. When a positive number is divided by a negative number, the answer is a negative number. The same applied when divided by a positive number.
Now the expression becomes,
.
Answer is .
We have one positive and one negative number. When divided, our answer is negative.
The quotient is .