Metric Units of Mass Convert mg g and kg

Welcome to Math with Mr. In this video, we're going to be converting metric units of mass, and specifically milligrams, grams, and kilograms. And our base unit of mass for the metric system is going to be gram. So, everything's going to be based around that gram. And the other units of mass are going to have prefixes attached to gram, and that's going to tell us what those units of mass mean. So, for example, milligram, the prefix milli means 1 1,000th. So, milligram is 1 1,000th of gram. Therefore, 1,000 mg equals 1 And for point of reference, milligram is unit of mass that is about grain of salt or sand. Next, we talked about our base unit gram, and for point of reference, gram is about paper clip or stick of gum. And then kilogram, we have the prefix kilo, that means 1,000. So, it takes 1,000 to equal 1 kg. And kilogram is little over 2 lb, so about the mass of textbook. And then down here, we have one last note, 1 kg equals million milligrams. So, let's jump into some conversions here, where we're going to convert between milligrams, grams, and kilograms. So, number one, 3 kg equals how many grams? Well, 1 kg equals 1,000 but we have three. So, 1,000, 1,000, 1,000. So, we can do 3 * 1,000 to give us how many grams that would equal. And that's going to give us 3,000 Next, we have 8 kg equals how many grams? So, eight groups of 1,000, 1,000, 1,000, 1,000 eight times. So, when we're going from kilograms to grams, we multiply by 1,000. Just like number one, except we have 8 kg here. So, we're going to end up with 8,000 8 kg equals 8,000 For number three, we're going to go the opposite way. We're going to go from grams to kilograms. So, we start with 5,000 and we need to split that 5,000 into groups of 1,000. Each one of those groups of 1,000 equals 1 kg. So, when we're going from grams to kilograms, we need to divide by 1,000. 5,000 / 1,000 equals five. Number four, we're going from kilograms to milligrams. So, 3 kg, each one of those kilograms is million milligrams. So, million, million, million. So, we do three * million. And that's going to give us an answer of 3 million milligrams. Number five, we're going the opposite way. So, we're going from milligrams to kilograms. So, we need to split into groups of million. Each one of those millions is kilogram. So, we need to do 4 million / million. And we end up with 4 kg. So, 4 million milligrams equals 4 kg. And lastly, number six, 8,000 mg equals how many grams? Well, we need to split into groups of 1,000. Each one of those 1,000s is 1 So, milligrams to grams, divide by 1,000. And we end up with 8 So, there you have it. There's converting metric units of mass with milligrams, grams, and kilograms. Hopefully, that helped. Thanks so much for watching. Until next time, peace.