Chapter 7.4, Problem 3NAEP

NATIONAL ASSESSMENT OF EDUCATIONAL PROGRESS (NAEP)

Helga’s process of calculating the tip to leave in a restaurant starts with the bill for food and drink.

First, she rounds the bill to the nearest ten cents.

Then she moves the decimal point in the rounded total one place to the left.

Finally, she double that amount.

Helga’s process calculates approximately what percent of the original bill?

a. $2\%$

b. $5\%$

c. $10\%$

d. $15\%$

e. $20\%$

NAEP, Grade 8, 2013