Estimate a 5% tip on a dinner bill of $67.22 by first rounding the bill amount to the nearest ten dollars.

Answer 1

To estimate a 5% tip on a dinner bill of $67.22 by rounding to the nearest ten dollars, first round $67.22 to the nearest ten:

$67.22 rounds to $70.

Next, calculate 5% of $70:

5% of $70 = 0.05 × 70 = $3.50.

Therefore, an estimated 5% tip on a $67.22 bill, after rounding, is approximately $3.50.