What is 20 Percent of 640?

What is 20 percent of 640?

Answer: 20 percent of 640 is 128. Alternatively, we can say that 128 is equivalent to 20% of 640.

Solution for What is 20 percent of 640:

n = 20 percent of 640

n = 20 % * 640

n = \frac{20}{100} * 640

n = \frac{20 * 640}{100}

n = \frac{12800}{100}

n = 128

Now we have 20% of 640 = 128. Alternatively, we can express it as 20 percent of 640 equals 128.

The step-by-step process for finding what is 20 percent of 640:

The mathematical calculation of 20% of 640 can be broken down as follows:

20 percent * 640
Convert this into an equation: (20 / 100) * 640
Simplify the equation further: (20 * 640) / 100
Carry out the calculation: 12800 / 100
The final answer is: 128

Thus, we conclude that 20% of 640 is 128.

Explanation for What is 20% of 640:

Step 1: **20 percent * 640**

Think of percent as parts out of 100. So, when we say 20 percent, it's like having 20 parts out of a total of 100. What we want to do now is find out what those 20 parts would be if our total was 640 instead of 100.

Step 2: **(20 / 100) * 640**

This is like dividing our 20 parts into 100. It's as if we have 100 pieces of candy and we only want 20 of those pieces. That gives us 0.20 or 20 hundredths. Now we multiply those 20 parts (or 0.20) by 640 to find out what 20% of 640 would be.

Step 3: **(20 * 640) / 100**

This is an alternative calculation. Instead of doing it in two steps like we did before, we can also do it in one step. First, we multiply 20 (our 20 parts) by 640 (our total amount), and then we divide that by 100.

Step 4: 12800 / 100

The previous step gave us 12800. But remember we were pretending our total was 100? Now we have to divide by 100 to get back to the number for our real total, which is 640. That's why we divide 12800 by 100.

Step 5: 128

Finally, after dividing 12800 by 100, we arrive at the answer: 128. Hence, we can definitively say that 20% of 640 equals 128.

This guide aims to simplify the understanding of percentage calculations, focusing on the question "What is 20% of 640?" Keep practicing with different numbers to hone your skills in percentage calculations. We hope this helps you in your quest for better mathematical understanding.