Rounding to a number with one non zero digit = $1000
Exact answer = $1230.25
Explanation:[tex]\begin{gathered} \text{Cost per hour = \$33.25} \\ \text{Number of hours installer worked = 37} \end{gathered}[/tex]Total amount paid after 37 hours:
[tex]\begin{gathered} \text{Total amount paid = cost per hour }\times\text{ number of hours worked} \\ \text{Total amount paid = 33.25 }\times\text{ 37} \\ \text{Total amount paid = 1230.25} \end{gathered}[/tex]To multiply whole number with decimals, we will remove the decimals from the number before multiplication. Then we will return it back after.
The decimal point was in 2 decimal place before. So, we will move the number in 2 decimal place
The installer was paid $1230.25 (this is the exact payment)
To estimate by rounding to a number with one nonzero digit, we will approximate to the the first digit. The approximation will be from the right to the left (up to 1).
