 So in this mini session, we're going to be looking at some useful concepts for working with percent. So first of all, so let's put up an example here. We'll have a fraction over 70. So to solve that, we'll just divide 70. So let's pull up the calculator. 45 divided by 70 is equal to 0.6428. On and on to let's call that 0.643 or so. That's our decimal point of that fraction, 643. So come to 2, converting the decimal to a percent. Let's use this decimal we just created. And to convert it to a percent, we're going to move the decimal two places to the right and add a percent sign. So if our number was, say, 0.92, move it two places, that would be 92%. So move the decimal two places to the right, add a percent sign for number three. To convert a percent to a decimal, we're just going to do very diverse of what we did. So if we had a 15%, we're going to take away the percent sign and move the decimal two places to the left. So we're left with a decimal equivalent of 0.15. So if we had 1.9%, we move it two places. So we're left with 0.019, which is a decimal equivalent. And we have to move two places, so we have this decimal equivalent. And we're going to take them out. So that's converting a percent to a decimal four. So changing the percent to a fraction, for example, 42%, we just take the number without the sign. Remember, take it to 100. So the fractional form, 42%, is 42 over 100. If we had 2.5%, that would be 2.5 over 100. We had 100% and there were 100 over 100. We could reduce that to one if we wanted. So to change a fraction to a percent, we're going to take two approach. For approach one, we're going to best take, for example, our 35 over 80. Our first approach is going to go back to where we're going to convert this to a decimal form equal to 0.4, 3, 7, 5. So we get our decimal form. Then once we get that, we're going to change that to a percent. To remember that, we're going to move it two places and add a percent sign. So approach one, convert it to a decimal form, then convert the decimal form to a percent. The other approach, take our 35 by 80 and remembering percent we can take to 100. So we can cross multiply and divide. So we're going to do 35 times 100 over 80 equal to our question mark. And 80, 43.75%. And so for our last one, number six. So in order to find the percent of a number, we're going to take two approaches. The first approach, our question is going to be 22% of 450. So our first approach is going to take the 22% and convert it to our decimal form 0.22. So we're going to say 0.22 times 450. That will give us 99. So 99 is 22% of 450. Our approach two is remember when we have a percent, 22%, we can take it to 100. So we can say that 22 of 100 is equal to what number out of 450. We can cross multiply and divide. So we get 22 times 450 divided by 100. And if we solve for that, once again, we get 99. So 99 equals 22% of 450. So these are six concepts to use when you're working with percentages. And the way to kind of master these techniques is just to work problems. Just work a lot of problems until you get comfortable with what each one of these processes is doing. So thanks for listening.