APA Unit 3 Test Review (Percent Problems)

Front

What is the formula for calculating simple interest?

Back

Simple Interest = Principal × Rate × Time

Front

If you invest $2,500 at an annual interest rate of 5%, how much interest will you earn in 1 year?

Back

$125

Front

How do you convert a decimal to a percent?

Back

Multiply the decimal by 100 and add a % sign.

Front

What is 0.37 as a percent?

Back

37%.

Front

What is the formula for percent error?

Back

Percent Error = |(Measured Value - Actual Value)| / Actual Value × 100%.

Front

If a salesperson earns 18% commission on a $25,000 sale, how much do they earn?

Back

$4,500.

Front

What is the percent error if the measured length is 12 cm and the actual length is 14.25 cm?

Back

15.79%.

Front

How do you find the interest rate if you know the principal, interest earned, and time?

Back

Rate = Interest / (Principal × Time).

Front

If you earn $6,000 in interest on a $10,000 deposit over 12 years, what is the interest rate?

Back

5%.

Front

What does it mean to say that a value is 'percent of' another value?

Back

It indicates how much one value is in relation to another value, expressed as a fraction of 100.