U. S. Customary System: The most
commonly used units of weight in the U.S. Customary System are ounce, pound and ton. Ounce (oz) = about the weight of a slice of bread Pound (lb) = 16 ounces, about the weight of a hammer Ton (t) = 2,000 pounds, about the weight of a small car
Metric Weight
(Mass): The most commonly used units for measuring mass* in the metric system are
the gram, milligram and kilogram. Gram (g) = about the weight of a paper clip Milligram (mg) = 1/1000 gram, about the weight of a wing of a housefly Kilogram (kg) = 1,000 grams, about the weight of a large can of tomatoes
*Measuring mass is not the same as measuring weight. Mass refers to the
quantity of an object. Weight refers to the force of gravity exerted on the object.
Weight
U.S Customary System vs. Metric
Volume is the capacity of a container, the number of
cubic inches it takes to fill a space. Volume may refer to liquids or solids.
U.
S. Customary System: The most commonly used units of volume in the U.S.
Customary System include: Liquid: Cup (c) = 8 fluid ounces Pint (pt) = 2 cups or 16 fluid ounces Quart (qt) = 2 pints or 32 fluid ounces Gallon (gal) = 4 quarts or 128 fluid ounces Dry: Dry pint = 33.6 cubic inches Dry quart = 2 dry pints Peck = 16 dry pints or 8 dry quarts Bushel = 32 dry quarts or 4 pecks
Metric Volume: The most commonly used units for measuring volume are milliliter,
liter and kiloliter. Milliliter (mL) = 1/1000 liter, about what an eye dropper holds Liter (L) = a large plastic soda bottle holds 2 liters Kiloliter (kL) = 1,000 liters, about the amount that a large backyard wading pool
holds
Volume
U.S Customary System vs. Metric
U. S. Customary System: Fahrenheit (F): 32 degrees - water freezes
72 degrees - normal room temperature
98.6 degrees - normal body temperature
212 degrees - water boils
Metric System: Celsius (C):
0 degrees - water freezes
20 degrees - normal room temperature
37 degrees - normal body temperature
100 degrees - water boils
Temperature
U.S Customary System vs. Metric
U. S. Customary System: Inch (in) = about the diameter of a quarter Foot (ft) = 12 inches Yard (yd) = 36 inches, 3 feet Mile (mi) = 5,280 feet, about 10 city blocks
Metric System: Meter (m) = about the length from the left shoulder to the longest right
fingertip (adult) Millimeter (mm) = 1/1000 meter, the head of a straight pin is about 1 millimeter Centimeter (cm) = 1/100 meter, width of your little fingernail Kilometer (km) = 1000 meters, about 6 city blocks
Length
U.S Customary System vs. Metric
U. S. Customary System and Metric: 60 seconds = 1 minute 60 minutes = 1 hour 24 hours = 1 day 7 days = 1 week 52 weeks = 1 year 12 months = 1 year 365 1/4 days = 1 year
Time
U.S Customary System and Metric
are the Same
U. S. Customary System: 100 cents = 10 dimes = 1 dollar 10 ten dollar bills = 100 dollars 10 hundred dollar bills = 1,000 dollars
Metric System: Each country has its own currency, different from American
dollars and cents but they are all based on a decimal system.
A decimal system is based on the number 10. You multiply and divide by ten to change
to a larger or smaller unit.
**Divide***when converting a smaller unit to a larger unit.
Example: To convert 32 ounces to pounds, divide: 32/16 = 2
lbs.
**Multiply***when converting a larger unit to a smaller unit. Example:
To convert 2 pounds to ounces, multiply: 2 x 16 = 32.
Money
The currencies are different but both systems use a decimal system
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