Math 7 Chapter 2 Test Review

Front

What is percent of change?

Back

Percent of change is a way to express the difference between an old value and a new value as a percentage of the old value.

Front

How do you calculate percent of change?

Back

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

Front

What is a decrease in percent of change?

Back

A decrease in percent of change occurs when the new value is less than the old value, resulting in a negative change.

Front

What is an increase in percent of change?

Back

An increase in percent of change occurs when the new value is greater than the old value, resulting in a positive change.

Front

If the original value is 72 and the new value is 36, what is the percent of change?

Back

Decrease 50%.

Front

If the original cost is $5 and the new cost is $1, what is the percent of change?

Back

Decrease 80%.

Front

What is 125% of 84?

Back

105.

Front

What percent of 29 is 3?

Back

10%.

Front

If the original cost is $50 and the new cost is $60, what is the percent of change?

Back

Increase 20%.

Front

What does it mean to find a percent of a number?

Back

Finding a percent of a number means calculating how much that percent represents in terms of the number.