CUSTOMARY AND METRIC MEASUREMENTSObjective: Students identify and convert customary and metric units of measure.

COMMON EQUIVALENT CUSTOMARY UNITS

Length Capacity12 inches (in)= 1 foot

(ft)8 fluid ounces (fl oz) = 1

cup (c)

3 feet = 1 yard (yd) 2 c = 1 pint (pt)

5,280 ft = 1 mile (mi) 2 pt = 1 quart (qt)

1,760 yds= 1 mi 4 qt = 1 gallon (gal)

Weight16 ounces (oz) = 1 pound (lb)

2,000 lbs = 1 ton

TRY THIS!!!

Method 1: ProportionsWrite a proportion

Method 2: Multiply by 1Multiply by a ratio equal to 1 and divide out the units

Convert 19 c to fl oz

fl oz

c 1 19

8 x

8 19 1x

152x

19 819

1 1

c fl ozc

c

19 8

1

fl oz

152 fl oz19 cups is equal to 152 fluid

ounces

METRIC UNITS BASE ON POWERS OF 10103=1,000 102=100 101=10 100=1

Thousands

Hundreds Tens Ones

Kilo- Hecto- Deca-Base Unit

Meter/Liter/Gram

1/101=1/10=0.1

1/102=1/100=0.01

1/103=1/1000=0.001

Tenths Hundredths Thousandths

Deci- Centi- Milli-To convert metric units, multiply or divide by a power of 10• Multiply to convert to smaller unit• Divide to convert to larger unit

TRY THIS!!!

510 cm to meters 2.3 L to milliliters

Convert each measure.

510cm510

100m

5 1. m

100 cm=1mSo divide by

100

Move decimal 2 places left

2 3. L 2 3 1000. mL

2300mL

1 L=100mLSo multiply

by 1000

Move decimal 3

places right

G-

LA

ND

1-gallon (gal)= 4-quarts (qt)=

8-pints (pt)= 16-cups (c)=

128 ounces (oz) 8oz=1 cup

EXAMPLE 1:Convert 5,000 pounds to tons.

EXAMPLE 2:Convert each measure.A. 530 cL to liters

B. 1,070 g to milligrams

EXAMPLE 3:Addison buys one pumpkin that has a mass of 3 kg and another that has a mass of 2,150 g. Which pumpkin has the greater mass? How much greater is its mass?