# 4.2.6 PEMDAS Performed By Hand

Now let’s practice performing operations by hand in the correct order.

## Activity: PEMDAS

In your math notebook, simplify each expression by following the correct order of operations.

(a)

### Comment

For each problem, first go through and work on the parentheses. Next, look for exponents. Multiplication and division should be carried out from left to right. Finally, perform addition and subtraction from left to right.

(a)

P: There are no parentheses.

E: There are no exponents.

M/D: (4 x 2 = 8)

A/S: 11

So, .

(b)

(b)

P: so now we have

E: (52 = 25) so now we have

M/D: (12 ÷ 4 = 3) so now we have

A/S: 28

So, .

(c)

(c)

P:

E:

M/D (from left to right):

A/S (from left to right):

Thus, .

(d)

(d)

P: There are none.

E:

M/D (from left to right):

Thus, .

4.2.5 PEMDAS Brainstretcher

4.3 Using Math in the Real World