Question

you purchase a new cell phone that costs $68.12 with a two - year plan. if you give the clerk $80, how much change will you receive? $12.88 $11.89 $11.88 $12.89

Explanation:

Step1: Subtract the cost of the cell phone from the amount given

We need to calculate \(80 - 68.12\).

$$\begin{align*} 80.00\\ -68.12\\ \hline \end{align*}$$

Step2: Perform the subtraction

Starting from the rightmost digit:

• \(0 - 2\) is not possible, so we borrow 1 from the tenths place. The tenths place becomes \(9\) (after borrowing 1 from the units place which then becomes \(9\) as well, and then borrowing 1 from the tens place where \(8\) becomes \(7\)). Now, \(10 - 2=8\) in the hundredths place.
• In the tenths place: \(9 - 1 = 8\).
• In the units place: \(9 - 8=1\).
• In the tens place: \(7 - 6 = 1\).

So, \(80 - 68.12=11.88\)

Answer:

\(11.88\) (the third option: \(\$11.88\))