Order of Operations with Rational Numbers

Front

PEMDAS only works if...

Back

add or subtract left to right

Front

PEMDAS only works if you multiply or divide _________.

Back

left to right

Front

Back

Sallie

Front

21 ÷ 7 + 4 (2)

Back

11

Front

Back

99

Front

4.2 − 0.2 (6) =

Back

3

Front

Back

-14.5

Answer explanation

 $-8.2+4.5\cdot-1.4$  
Be sure that you followed order of operations and did the multiplication first.
Was your product negative, since negative times positive is negative?
Finally, when you added, was your sum negative, since negative plus negative is more negative?

Front

Back

11.5

Front

Back

2

Front

Back