Percentage Changes and Calculations

The video tutorial covers the concepts of percentage increases and decreases, providing examples and practice problems to help viewers understand how to calculate percentage changes. It explains the importance of knowing how to use the pause, forward, and reverse buttons to maximize learning. The tutorial also demonstrates how to calculate new amounts based on given percentage changes and offers additional resources for further practice.

What should you do if you lose concentration while watching the video?

• Skip to the end of the video.

• Pause the video and take a break.

• Keep watching without a break.

• Watch the video at double speed.

In 1800, which continent had a population increase of almost 65%?

• Asia

• Europe

• Africa

• North America

If a store offers a 20% discount, what does this mean?

• The price is doubled.

• The price is reduced by 20%.

• The price is increased by 20%.

• The price remains the same.

How do you calculate the percentage change?

• Multiply the new amount by the original amount.

• Add the new amount to the original amount and divide by two.

• Subtract the new amount from the original amount and divide by the original amount.

• Divide the new amount by the original amount.

What is the percentage decrease if a sweater's price drops from $25 to $20?

• 10%

• 15%

• 20%

• 25%

If you have $20 and take out one $5 bill, what percentage of the total have you taken?

• 20%

• 30%

• 25%

• 10%

If a car's original price is $12,000 and it's on sale for 20% off, what is the sale price?

• $11,000

• $12,000

• $9,600

• $10,000

Your allowance increased from $5 to $6. What is the percentage increase?

• 25%

• 20%

• 15%

• 10%

If college tuition decreased from $11,500 to $10,500, what is the percentage decrease?

• 5%

• 8.7%

• 12%

• 10%

If jet fuel was $5.25 per gallon and was 20% less last year, what was last year's price?

• $4.00

• $4.20

• $4.50

• $5.00