Question

estimate the amount of the tip by rounding the bill to the nearest dollar before calculating.
20% tip on a bill of $20.84
the amount of the tip is approximately $

Explanation:

Step1: Round bill to nearest dollar

$20.84$ rounds to $21$

Step2: Calculate 20% of rounded bill

$21 \times 0.2 = 4.2$

Step3: Approximate to whole dollar

$4.2$ approximates to $4$

Answer:

4