Percentage Calculations and Distance Problems

The video tutorial covers benchmark percentages, focusing on calculating 50% and 20% of numbers using multiplication and division. It includes solving problems related to discounts, comparing percentages of different amounts, and calculating time and distance using a table. The tutorial emphasizes mental math techniques and visual aids like tape diagrams to simplify percentage calculations.

What is one method to quickly find 50% of a number?

• Multiply by 2

• Subtract 50

• Divide by 2

• Add 50

If a laptop is on a 10% discount and you save $35, what was the original price?

• $350

• $300

• $315

• $385

How can you express 15 as a percentage of 30?

• 50%

• 25%

• 100%

• 75%

What percentage of 12 is 3?

• 25%

• 20%

• 10%

• 30%

How do you calculate 6 as a percentage of 10?

• 50%

• 80%

• 60%

• 70%

Does dividing a number by 5 always give you 20% of it?

• Yes, because dividing by 5 is the same as multiplying by 1/5

• No, because it only works for multiples of 5

• No, because it only works for even numbers

• Yes, because 20% is 1/5 of 100%

Diego has 75% of $10. How much money does he have?

• $2.50

• $7.50

• $5.00

• $10.00

Noah has 25% of $30. How much money does he have?

• $5.00

• $7.50

• $10.00

• $2.50

How long does it take for Lin and Andre to meet if they start 22 miles apart?

• 5 hours

• 2 hours

• 3 hours

• 4 hours

What is the combined distance Lin and Andre travel each hour?

• 5.5 miles

• 5 miles

• 4 miles

• 6 miles