Metric System

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Slide 1: 

METRIC SYSTEM Why study it? Who needs it?

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METRIC SYSTEM UNITS: Meters>measures distance Liters>measures liquid volume Grams>measures mass

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THE METRIC SYSTEM IS BASED ON POWERS OF TEN 1000, 100, 10, 1, 0.1 0.01, 0.001 Kilo Hecto Deka UNITS Deci Centi Milli meters liters grams

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AN EASY WAY TO REMEMBER THE METRIC PREFIXES IS: Knights Kilo Hunt Hecto Dragons Deka Usually Units During Deci Cold Centi Mornings Milli

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DO YOU KNOW: Where the millimeters are located? Where the centimeters are located? Where the decimeters are located? How many millimeters are in a meter? How many centimeters are in a meter? How many decimeters are in a meter?

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Kilo Hecto Deka UNITS Deci Centi Milli • If you have 1 millimeter, and you want to find out how many centimeters that is, move the decimal point one place to the LEFT. So….1 millimeters moved one place to the left is: 1 . 0 What this means is that 1 mm is 0.1 of a cm.

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 mm and you want to know how many dm that is, move the decimal point two places to the LEFT. 00 1 • What this means is that 1 mm is 0.01 of a dm. • Do you get it?

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 mm and you want to know how many meters that is, move the decimal points three places to the LEFT. 0001 • What this means is 1 mm is 0.001 of a meter. • mmm..this is not easy-

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 mm and you want to know how many dkm, move the decimal point four places to the LEFT. 00001 • What this means is that 1 mm is 0.0001 of a dkm. • I think I’m getting it!

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 mm and you want to know how many hm that is, move the decimal point 5 places to the LEFT. 000001 • What this means is that 1 mm is 0.00001 of a hm. • Piece of cake!

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 mm and you want to know how many km that is, move the decimal point six places to the left. 0000001 • What this means is that 1 mm is 0.000001 of a km. • The decimal point has a long way to travel!

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 km and you want to know how many hm that is, move the decimal point one place to the RIGHT. 1 • 0 What this means is that 1 km is the same as 10 hm. • Now we’re going from bigger to smaller units.

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 km and you want to know how many dkm that is, move the decimal point two places to the RIGHT. 1 • 00 What this means is that 1 km is the same as 100 dkm. • Yeah! I got it! You are multiplying so the number gets bigger.

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 km and you want to know how many meters that is, move the decimal point three places to the RIGHT. 1 • 0 0 0 • What this means is that 1 km is the same as 1000 meters. I got it too!

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 km and you want to know how many dm that is, move the decimal point four places to the RIGHT. 1 • 0 0 0 0 • What this means is that 1 km is the same as 10,000 dm.

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 km and you want to know how many cm that is, move the decimal point five places to the RIGHT. 1 • 0 0 0 0 0 • What this means is that 1 km is the same as 100,000 cm.

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knights (kilo), hunt (hecto), dragons (deka), usually (UNITS), during (deci), cold (centi), mornings,(milli) If you have 1 km and you want to know how many mm that is, move the decimal point six places to the RIGHT. 1 • 0 0 0 0 0 0 • What this means is that 1 km is the same as 1,000,000 mm. I wonder if I can do this on my own now??

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TRY SOLVING THESE PROBLEMS: (Try to solve the problem before you hit the right arrow.) 0.428 cm = ? mm 79.3 dm = ? hm So far so good? 17 mm = ? km 237.6 dkm = ? dm 0.006 cm = ? m 428 mm  000793 hm  K H D U D C M  0 000017 km  (NOTE: Do you see the random decimal point? Ignore it.) 23760 dm  000006 cm 

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ARE YOU STILL CONFUSED? CHECK OUTAND REVIEW THE POWERPOINT ONLINE.