Evaluating expressions using the order of operations.

 November 18,2020.

Today's math lesson is evaluating expressions using the order of operation rules.

Here are the rules you need to follow when solving:

1. Do parentheses first. ( )

2. Multiplication or division which ever comes first. 

3. Add or subtract which ever comes first. 

Examples:

3+2-1x5=------Ask yourself, are there any parentheses? No there isn't.

 3+2-1x5= Is there any multiplication or division? What appears first?

                  There is no division, so we solve the multiplication first.

3+2-1x5=

3+2-5=  Now that we solved the multiplication, we go to next rule, 

               which is to either do adding or subtracting, whichever comes 

                first. So 3+2 is first, so you add them.

3+2-5=

5-5=0 SOLVE THE LAST ONE NOW, WHICH IS 0. THIS IS HOW YOUR WORK SHOULD LOOK LIKE NOW:

3+2-1x5=

3+2-5

5-5

0

Example 2: Remember to follow the rules. 

2+5+2-3=

7+2-3

9-3

6

Now it's time for you to solve your work. You may use a calculator . Don't forget to follow the rules.