Exam 16: Simple Percent and Percentage

9 is 45% of what number?

How many square feet of floor underlayment should be ordered for a job when the area of the floor is 4,570 square feet and 10% of the area is allowed for waste?

When solving percentage problems, first change the percent to a decimal, and then treat "of" as "times."

Find 175% of 900 lb.

Find 2% of $68.

Percent may be expressed as a decimal by first changing the number to a fraction and then to a decimal.

Express 0.95 as a percent.

Express 27% as a decimal.

What percent of 8 is 4?

It is estimated that 2,150 square feet of roof sheathing is needed. If an additional 10% is allowed for waste, find the total amount required.