Multiplication and Division - Algebra 2

The distributive property is handy to help get rid of parentheses in expressions. The distributive property says you "distribute" the multiple to every term inside the parentheses. In symbols, the rule states that

So, using this rule, we get

Thus we have our answer is .

The first two factors are the product of the sum and the difference of the same two terms, so we can use the difference of squares:

Now use the FOIL method:

To find the prime factorization of 40, write 40 as a combination of its prime factors.

The most important part of this problem is to remember the order of operations: PEMDAS

First: Perform any calculations that are within parentheses.

Second: Perform any calculations that are raised to an exponent.

Third: Working from left to right, perform any multiplications or divisions.

Fourth: Working from left to right, perform any additions or subtractions

For this problem:

First we do all of the calculations inside parentheses: and .

Therefore, the expression becomes .Now working from left to right, we perform any multiplications and/or divisions: and .

Therefore, the expression becomes and we simply add the remaining numbers to get

To solve this problem, we simply follow our order of operations, PEMDAS:

First: Perform any calculations that are within parentheses.

Second: Perform any calculations that are raised to an exponent.

Third: Working from left to right, perform any multiplications or divisions.

Fourth: Working from left to right, perform any additions or subtractions.

First, we evaluate our parentheses: and .

The original expression then becomes .

This question is testing your knowledge of the order of operations.

Do the multiplication/division parts of the question first, then addition/subtraction (in this case, only subtraction).

When multiplying, you can draw out a grid.

Have three rows and five columns and these should create little boxes.

Count them up individually and you should get

When dividing, you draw out circles.

Then circle circles and that would be one set.

Once most or all the circles are covered, count out the sets.

There should be .

When multiplying with more than a single digit, focus on the ones digiit before the tens digit. is . The is written down but the is carried over to the tens digit. Then we multiply and which is but with the that was carried over, we add it to the which makes . Final answer is .

When dividing, focus on the first digit in the dividend with the divisor. can go into only one time. So put the on top of the and the goes under the . Then, take the difference which is . Then bring down the next digit in the dividend which is . Next, figure out if goes into which is . times is which means we get a difference of zero and so divides evenly with to give us a final answer of .

Remember PEMDAS, the acronym which stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. This is the order of operations we need to adhere to.

Multiplication comes before addition.

So multiply out and which is .

Then finally add that with to get the final answer of .

Remember PEMDAS, the acronym that stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. This is the order of operations we need to adhere to when doing any arithmetic.

Division comes before subtraction.

So divide out and which is .

Then, subtract that with to get the final answer of .

Remember PEMDAS, the acronym that stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. This is the order of operations we need to adhere to when doing any arithmetic.

The parentheses go first so do what's inside the parentheses.

The sum of and is .

Then we multiply that with to get the final answer of

To simply , notice that there are variables that can be cancelled out.

Another option is to multiply through the numerator and the denominator, and then reduce.

Remember when their are exponents in the numerator and denominator with the same base you subtract the denominator from the numerator.

Following the order of operations, let's do all the parenthesis first. Within the parenthesis, we still follow the order of operations, and complete the exponential before doing the addition:

Now we can go through and do all the multiplication and division. Remember, we can't divide through the addition signs, so we'll leave that for later.

Now we can do the addition/subtraction:

Because we're dealing with fractions, it would help if we simplified:

Multiply the first number with the ones digit of the second number.

Multiply the first number with the tens digit of the second number.

Add a zero to this number.

Add this number with the first number calculated.

The answer is:

Multiply the first number with the first digit of the second number.

Multiply the first number with the second digit of the second number, and then add a zero to the end of that number.

The number becomes:

Multiply the first number with the hundreds digit of the second number, and then add two zeros to the end of that number.

The number becomes:

Add the three numbers obtained.

The answer is:

Multiply the first number with the ones digit of the second number.

Multiply the first number with the tens digit of the second number, and then add a zero to the end of the number.

Add both numbers.

The answer is: