Question

estimate a 10% tip on a bill of $138.17 by first rounding the bill amount to the nearest ten dollars. estimated tip:

Explanation:

Step1: Round bill to nearest $10

The bill is $138.17. Since 8 > 5, round up to $140.

Step2: Calculate 10% of rounded bill

10% of a number is $\frac{10}{100}$ times the number.
$\frac{10}{100} \times 140 = 14$

Answer:

$14