Stephanie makes $6.60 an hour plus tips working at a restaurant. On a particular day, she worked 8 hours and made $78.80. Write and solve an equation to determine the amount she made in tips. Use a problem-solving model to solve.

Here is what'd you do:

Ignore the $78.80 at the moment and focus on the $6.60 an hour and she worked 8 hours.

So, basically you'd do 6.60 * 8 (or 660*8 if you aren't allowed a calculator)

For 660*8 you'd get:

5280. move the decimal over twice.

$52.80, if you are allowed a calculator you would have just done 6.60 * 8

So now you know she got $52.80 just working hourly.

Subtract $78.80 from $52.80

Your Answer:

Stephanie made $26 from tips.

78.80-6.60*8=78.80-53.40=5.40