Understanding Basic Percentage Operations

The video tutorial by Mr. Logue explains how to multiply a percentage by a whole number. It begins by clarifying that percentages are fractions with a denominator of 100. Two methods are introduced: using key percentages and multiplying then dividing by 100. The first method involves breaking down percentages into key components like 10% and 5%, while the second method uses short multiplication followed by division. Practice problems are provided to reinforce learning, and the video concludes with a review of both methods.

What is the equivalent fraction of a percentage?

• A fraction with a denominator of 100

• A fraction with a denominator of 1000

• A fraction with a denominator of 50

• A fraction with a denominator of 10

What does the multiplication sign represent when multiplying a fraction by a whole number?

• Subtraction

• Of

• Addition

• Division

How can you find 50% of a number using key percentages?

• Divide by 4

• Divide by 2

• Multiply by 4

• Multiply by 2

To find 25% of a number, you should:

• Multiply by 2

• Divide by 2

• Divide by 4

• Multiply by 4

What is the first step in finding 15% of a number using key percentages?

• Find 25% of the number

• Find 20% of the number

• Find 10% of the number

• Find 5% of the number

After finding 10% of a number, how do you find 5%?

• Divide by 2

• Add 10%

• Subtract 10%

• Multiply by 2

What is the result of adding 10% and 5% of a number?

• 5% of the number

• 10% of the number

• 15% of the number

• 20% of the number

In the second method, what is the first step to multiply a percentage by a whole number?

• Add the percentage to the whole number

• Subtract the percentage from the whole number

• Multiply the whole number by the percentage

• Divide by 100

What is the final step in the second method after multiplying the whole number by the percentage?

• Add 100

• Subtract 100

• Multiply by 100

• Divide by 100

What is the purpose of using a place value holder in short multiplication?

• To divide numbers

• To add numbers

• To subtract numbers

• To maintain correct place value