Understanding Percentages and Rates

The video tutorial covers understanding unit rates, speed, pace, and percentages. It explains how to use equivalent ratios to convert between different units, such as inches to centimeters. The tutorial also discusses unit prices and how to determine equivalent ratios in pricing. Finally, it demonstrates calculating percentages using a double number line, providing examples of how to find percentages of a given amount.

What is a unit rate?

• A rate that is used to measure speed

• A rate that is always equal to one

• A rate that compares two different quantities

• A rate per hundred

How many inches are in 5 feet if 1 foot equals 12 inches?

• 50 inches

• 60 inches

• 70 inches

• 80 inches

If 100 inches equal 254 centimeters, how many centimeters are in 20 inches?

• 80 cm

• 70 cm

• 60 cm

• 50.8 cm

What is the unit price if 10 pounds of apples cost $4?

• $0.25 per pound

• $0.30 per pound

• $0.50 per pound

• $0.40 per pound

If $12.50 is 125% of $10, what is 50% of $10?

• $10.00

• $7.50

• $5.00

• $2.50

How do you find 25% of a number using multiplication?

• Multiply by 0.75

• Multiply by 0.5

• Multiply by 1.25

• Multiply by 0.25

What is the percentage of 9 out of 36?

• 25%

• 30%

• 35%

• 20%

How can you visualize percentages using a double number line?

• By dividing the line into equal intervals

• By aligning 0% and 100% at the same point

• By marking only the 50% point

• By using a single number line