Percent Applications: math test, Grade 7 – download the PDF

1 Quick calculations / 4 pts

A calculator is allowed.

a) Find 15% of 360.
b) Find 6% of 45.
c) Write 0.035 as a percent.
d) Write \( \dfrac{5}{8} \) as a percent.

2 Percent change / 3 pts

a) A stream’s depth grows from 64 centimeters to 80 centimeters. Find the percent increase.
b) A bike’s price falls from $90 to $72. Find the percent decrease.

3 Discount and markup / 4 pts

a) A backpack costs $75 and is 40% off. Find the sale price.
b) A store buys a lamp for $28 and uses a 75% markup. Find the selling price.

4 Tax and tip / 3 pts

A meal costs $64 before tax. The sales tax is 8.5% and the diner leaves a 20% tip on the pre-tax price. Find the tax, the tip, and the total paid.

5 Simple interest / 3 pts

You deposit $2,400 at 3.5% simple interest per year for 4 years. Find the interest and the final balance.

6 Commission and percent error / 3 pts

a) A car salesperson earns a 2.5% commission on $18,000 of sales. Find the commission.
b) A 250-milliliter beaker is measured as 240 milliliters. Find the percent error.