The Metric System

The Metric System Common standard units are necessary for universal understanding Ancient measurement were based on parts of the body or objects like grain. (Not very reliable)

The Metric System Example: you can measure with yards, meters, or arm spans-but unless everyone uses the same measurements, each result will differ The International System of Units (SI) developed so that all scientists can share & compare their observations and results (metric)

SI units (metric system) are based on the number 10 Makes conversions from one unit to another easier

Length: How long something is Metric System Length: How long something is

Length: How long something is Metric System Length: How long something is Volume: the size of a region in a three-dimensional space

Metric System Length: How long something is Volume: the size of a region in a three-dimensional space Area: the size of an object’s surface

Metric System Length: How long something is Volume: the size of a region in a three-dimensional space Area: the size of an object’s surface Mass: the amount of matter in an object

Metric System Length: How long something is Volume: the size of a region in a three-dimensional space Area: the size of an object’s surface Mass: the amount of matter in an object Temperature: how hot or cold something is

Metric System Basic Units Length = meter (m) Mass = gram (g) Volume = liter (L)

kilo hecto deka BASE deci centi milli We add prefixes to these basic units to measure very large or very small quantities kilo hecto deka BASE deci centi milli King Hector’s dog, Benji, drinks chocolate milk meter liter gram

k h da base d c m Example: 200 meters = ________ millimeters To convert from one unit to another, move the decimal point the number of spaces and direction indicated

You move the decimal point __3___ places to the _right_ k h da base d c m Example: 200 meters = _200,000_ millimeters You move the decimal point __3___ places to the _right_

You move the decimal point _____ spaces to the _____ k h da base d c m Example: .0325 cm = ________ km You move the decimal point _____ spaces to the _____

You move the decimal point __5___ spaces to the _left____ k h da base d c m Example: .0325 cm = _.000000325_ km You move the decimal point __5___ spaces to the _left____

You move the decimal point ______ places to the ______ k h da base d c m Example: 4897 cm = ___________ m You move the decimal point ______ places to the ______

You move the decimal point __2____ places to the __left____ k h da base d c m Example: 4897 cm = ___48.97__ m You move the decimal point __2____ places to the __left____

k h da base d c m Classroom clips (5min) on the metric and standard systems Classroomclips.org/video/1444

k h da base d c m Divide into groups of 4-5 and work through the following problems TOGETHER HELP one another!

k h da base d c m 2.2 hl = ____kl 540.80 mm =__ cm .739 cm = __ m 0.27 dag = ___dg 89.025 m = _ mm 600 l = ____cl 46 km = ____m .99 cm = ____km

answers 2.2 hl = .22 kl 540.80 mm =54.08 cm .739 cm = .00739m 0.27 dag = 27dg 89.025 m = 89,025 mm 600 l = 60,000cl 46 km = 46,000m .99 cm = .0000099km