Chapter 63 (Math 7)

Front

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

Back

Percentage = (Part / Whole) * 100

Front

What percent of 40 is 9?

Back

22.5%

Front

How do you calculate the percent of change?

Back

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

Front

Find the percent of change from 48 to 36.

Back

25% decrease

Front

What is simple interest?

Back

Simple Interest = Principal x Rate x Time

Front

If Jenna borrowed $5,000 for 3 years and paid $1,350 in interest, what was the interest rate?

Back

9%

Front

What is the formula for calculating percent error?

Back

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

Front

What is the estimated deer population in northern Illinois?

Back

17,600

Front

What is the actual count of the deer population in northern Illinois?

Back

21,300

Front

Calculate the percent error for the deer population estimate.

Back

17.4%