Chapter 63 (Math 7)

Front

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

Back

Percentage = (Part / Whole) × 100

Front

Find 72% of 325.

Back

234

Front

What is the formula for calculating simple interest?

Back

I = PRT (Interest = Principal × Rate × Time)

Front

Using I=prt, find the interest earned on a $1900 deposit at 5.5% interest over 36 months.

Back

$300

Front

What is the formula to calculate the percent of change?

Back

Percent of Change = ((New Value - Old Value) / Old Value) × 100

Front

Find the percent of change from $52 to $125. Round your answer to the nearest whole percent.

Back

140% increase

Front

What is the formula to calculate percent error?

Back

Percent Error = (|Estimated Value - Actual Value| / Estimated Value) × 100

Front

The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?

Back

20%

Front

If the principal is $500, the interest rate is 5%, and the time is 5 years, what is the interest earned?

Back

$125

Front

What does 'principal' mean in finance?

Back

Principal is the initial amount of money deposited or invested.