Measurement involves assigning a number to an object's characteristic that can be compared to other objects. There are two main systems of measurement: the English system used in the U.S. which uses feet, pounds, and seconds, and the metric system used internationally which is based on units like meters, grams, and liters. Converting between units requires understanding the relationships between prefixes and moving decimals accordingly.

1. MEASUREMENT

2. MEASUREMENT
Measurement is the assignment of a
number to a characteristic of an object or
event, which can be compared with other
objects or events. The scope and
application of a measurement is
dependent on the context and discipline.

3. MEASUREMENT
ENGLISH SYSTEM METRIC SYSTEM

4. ENGLISH SYSTEM
•The English system is defined as the
measurement system used in many
countries including the United States
using feet, pounds and seconds. An
example of English
system measurement is a man being six
feet tall.

5. •Set up the conversion ratio and solve for the
missing value.
Convert 16 ton to pounds.

6. •There is no stated conversion for cups to gallons,
so we have to be a bit more creative. Since there
are 4 cups in 1 quart, and 4 quarts in 1 gallon,
we can set up the conversion ratio based on
"quarts". Two gallons is 8 quarts.
Find the number of cups in two
gallons.

7. •A proportion can be set up using the appropriate
conversion ratio. In a proportion the product of
the means equals the product of the extremes.
Use this "cross multipy" concept to find the
answer.
Convert 84 inches to feet.

8. METRIC SYSTEM
•The metric system is an internationally
agreed decimal system of measurement
created in France in 1799. The
International System of Units (SI), the
official system of measurement in almost
every country in the world, is based upon
the metric system.

9. METRIC SYSTEM

10. •Notice in the listing above that meter is three
places to the right of the prefix kilo. This tells us
to move the decimal point three places to the
right. The answer is 10,250 meters.
Convert 10.25 kilometers to
meters.

11. •Notice in the listing above that the prefix deca is
four places to the left of the prefix milli. This tells
us to move the decimal point four places to the
left. The answer is 0.0650 daL. (Note: dL is
deciliters, daL is decaliters.)
Convert 650 mL to daL. [mL is milliliters and daL is
decaliters].

12. •Notice in the listing above that the prefix milli is
three places to the right of gram. This tells us to
move the decimal point three places to the right.
The answer is 750,000 milligrams.
Convert 750 grams to
milligrams.

13. FUNDAMENTAL
QUANTITIES

14. FUNDAMENTAL QUANTITIES
• Length (meter)
• Mass (kilogram)
• Time (second)
• Electric current (ampere)
• Thermodynamic temperature (kelvin)
• Amount of substance (mole)
• Luminous intensity (candela)

15. SIGNIFICANT
FIGURES

16. RULES IN SIGNIFICANT
FIGURES

17. RULE #1: All digits 1 through 9 are significant