 Okay, let's go ahead and do this series of one-step conversions. These are nice basic conversions. You just use the conversion factor that's given to you, and cancel out the units you don't want, giving you the units that the problem asks for. So let's start with A, 155.5 centimeters. We're going to use that conversion factor up at the top, 1 meter equals 100 centimeters. So we're going to just put the centimeters in the denominator, meters up top. So 155.5 divided by 100 is going to give you 1.555 meters. Same strategy for B. 1 kilogram equals 1,000 grams. So we're going to take 2491.6 grams. Divide that by 1,000 grams. Multiply by 1 kilogram, giving us 2.4916 kilograms. You've got to remember to have the correct number of significant figures and the units in these problems. So this next one really emphasizes that, 248 centimeters. So if we use the conversion factor given to us, 1 centimeter equals 10 millimeters. Oh my goodness. We're going to put the centimeters at the bottom, millimeters at the top. And that's going to cancel out the centimeters. So when we multiply that, we get 2480 millimeters. Now that last zero is not significant. So we want to make sure to write the answer like I've done up at the top. And 2.48 times 10 to the third millimeters or 2,480 millimeters. And make sure not to put a decimal place after that zero. It's probably best if you just keep it in scientific notation. And anyways, let's do this last problem. Using the conversion factor, 1 liter equals 1,000 mills. We're going to take 6,781 mills and convert them to liters by putting the milliliters on the bottom and the liters on the top. That will cancel out our mills, leaving us with liters, giving us a final answer of 6.781 liters. Let me know if you have any questions on this one.