To find a percentage of a whole number, we will multiply the percentage by the whole number. So, we get

We can cancel the zeros to make things easier.

To convert a percentage into a decimal, divide the number by 100.

Instead of doing long division, simply pretend there is a decimal point at the end of the number, and then move the decimal point two places to the left.

You can think of 77 as 77.0 (or 77. - the zero doesn't matter). Now move the decimal point two places to the left.

Answer:

To begin, you can set up a proportion:

When trying to find a percent of a number, convert the percent into a decimal. To do this, divide the percent by 100.

You then multiply 500 by 0.15. Since 500 represents 100% of Katie's cards, multiplying by 0.15 will give you how many cards equal 15% of the total.

The result is your answer.

To find a percentage of a whole number, we will multiply the percentage by the whole number. So, we get

We can cancel the zeros to make things easier.

To convert a percentage into a decimal, divide the number by 100.

Instead of doing long division, simply pretend there is a decimal point at the end of the number, and then move the decimal point two places to the left.

You can think of 77 as 77.0 (or 77. - the zero doesn't matter). Now move the decimal point two places to the left.

Answer:

If 10 percent of the cake weights 20 ounces, then the entire cake will weigh 200 ounces, because 10 times 20 is 200.

If the cake has 8 slices, then each slice will weigh (in ounces) 200 divided by 8. 200 divided by 8 is 25; therefore, 25 ounces is the correct answer.

When given a part, you can use a percentage to determine the whole by converting the percentage to a decimal and dividing the part by that number.

Taking 1.11% percent of a number is the same as multiplying it by 0.0111, so

1.11% percent of 1.11 is equal to

.

To find a percentage of a whole, we will first write the percentage as a fraction. We know that all percentages can be written as a number over 100. So,

Now, we will multiply the fraction by the whole number. We get

Now, we can simplify/multiply.

We write 150 as a fraction over 1.

We can cancel out the zero in 150 and the zero in 100.

We can cancel out the zero in 30 and the zero in 10.

Now, we can multiply.

Therefore, of is .

Method 1:

Rewrite 0.036 as a fraction:

Because percents are based on 100, divide the numerator and denominator by 10.

3.6%

Method 2:

Multiply

To multiply by 100, move the decimal point two places to the right; then add the percent sign:

3.6% is the correct answer.