Percents Homework

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate percent change?

Back

Percent change = ((New Value - Old Value) / Old Value) x 100.

Front

What is the formula to find the percent of a number?

Back

Percent of a number = (Percent / 100) x Total.

Front

How do you find the sale price after a discount?

Back

Sale Price = Original Price - (Discount Percent / 100) x Original Price.

Front

What is percent error?

Back

Percent error = (|Estimated Value - Actual Value| / Actual Value) x 100.

Front

If a class has 35 students and increases to 42, what is the percent change?

Back

20%.

Front

If you leave an $8.10 tip on a $45 meal, what percent of the bill was your tip?

Back

18%.

Front

What is the sale price of sandals originally priced at $21 with a 20% discount?

Back

$16.80.

Front

If Irene thinks she has space for a 45-inch bookcase but only has space for a 40-inch bookcase, what is the percent error?

Back

12.5%.

Front

What was the percent error if the estimated attendance for a game was 15,000 but only 12,500 attended?

Back

20%.