Understanding Percent Change

The video tutorial explains how to calculate the percent of change, distinguishing between increases and decreases. It provides examples, such as changes in house value and salary, to illustrate the concept. Additionally, it addresses a common misconception about stock price changes, showing that a 10% decrease followed by a 10% increase does not result in breaking even.

What is the formula to calculate the percent change?

• Ending amount minus starting amount, divided by ending amount, times 100%

• Starting amount minus ending amount, divided by starting amount, times 100%

• Ending amount minus starting amount, divided by starting amount, times 100%

• Starting amount minus ending amount, divided by ending amount, times 100%

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CCSS.6.RP.A.3C

If the percent change result is negative, what does it indicate?

• An increase

• A decrease

• No change

• A mistake in calculation

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CCSS.6.RP.A.3C

In the house value example, what was the percent change?

• -40%

• -10%

• -20%

• -30%

What does a -20% change in the house value signify?

• The house value decreased by 10%

• The house value decreased by 20%

• The house value remained the same

• The house value increased by 20%

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CCSS.6.RP.A.3C

In the salary example, what was the percent increase?

• 12.5%

• 10%

• 11.1%

• 15%

What does an 11.1% increase in salary mean?

• The new salary is 11.1% higher than the current salary

• The new salary is 11.1% of the current salary

• The new salary is the same as the current salary

• The new salary is 11.1% lower than the current salary

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CCSS.6.RP.A.3C

In Maria's stock scenario, what was the result after a 10% drop and a 10% rise?

• She gained $10

• She gained $100

• She broke even

• She lost $10

Why doesn't a 10% increase after a 10% decrease result in breaking even?

• Because the decrease was not actually 10%

• Because the increase was more than 10%

• Because the increase is calculated on the original amount

• Because the increase is calculated on a lower base amount

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CCSS.6.RP.A.3C

What is the key takeaway from Maria's stock scenario?

• The same percent of return is needed to recover from the same percent loss

• A lower percent of return is needed to recover from the same percent loss

• A higher percent of return is needed to recover from the same percent loss

• Percent changes do not affect stock prices

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CCSS.6.RP.A.3C

What is a common misconception about percent change?

• That percent change is irrelevant in real life

• That percent change is always positive

• That percent change only applies to financial scenarios

• That a percent increase and decrease of the same value will cancel each other out

Tags

CCSS.6.RP.A.3C