Geometry

Lesson 0 – 1 Changing Units of Measure Objective: Convert units of measure within the customary and metric systems.

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Units of Measure

Metric units of Length  1 kilometer (km) = 1000 meters (m)  1 meter (m) = 100 centimeters (cm)  1 cm = 10 millimeters (mm)

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Units of Measure

Customary units of Length  1 foot (ft) = 12 inches (in)  1 yard (yd) = 3 feet (ft)  1 mile (mi) = 5280 feet (ft)

Which Unit?

State which metric unit you would use to measure the length of your pen.

centimeter State which customary unit you would use to measure the length of the classroom.

feet

Converting

To convert from a larger unit to a smaller unit, multiply To convert from smaller units to larger units, divide.

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Convert

Complete each sentence 4 .

2

km

1 * 1000 1

km m

13

yd

1 * 1 3

ft yd

Your Turn

Complete each sentence.

8.7 km = 8 .

7 1

km

* 1000

m

1

km

6.1

18 .

3 1

ft

* 1 3

yd ft

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Example

17

mm

* 1 1

cm

10

mm

1

m

* 100

cm

 17

m

1000  0 .

017

m

6600

yd

* 1 3

ft

1

yd

* 1

mi

5280

ft

 19800

mi

5280  3 .

75

mi

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Units of Measure

Metric Units of Capacity  1 liter (L) = 1000 milliliters (mL)

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Units of Measure

Customary units of Capacity  1 cup c = 8 fluid ounces (fl oz)  1 pint (pt) = 2 c  1 quart (qt) = 2 pt  1 gallon (gal) = 4 qt

Convert

3 .

7

L

1 * 1000 1

L mL

7 1

pt

* 1 2

c pt

* 8

fl

1

c oz

16

qt

1 * 1

gal

4

qt

4

gal

1 4

qt

* 1

gal

* 2

pt

1

qt

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Units of Measure

Metric units of Mass  1 kilogram (kg) = 1000 grams (g)  1 g = 1000 milligrams (mg)

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Units of Measure

Customary units of Weight  1 pound (lb) = 16 ounces (oz)  1 ton (T) = 2000 lb

Convert

5,470,000 5.47 kg = ____mg 5 .

47

kg

* 1 1000

g

1

kg

5

T

1 160,000 5 T = _____ oz * 2000

lb

1

T

* 16

oz

1

lb

* 1000 1

g mg

Homework

Pg. P5 2 – 26 Even