MEASUREMENTS

Mary Jane R. De Ade

BSED 3B/MATH

What is measurement?

Measurement is finding a number that shows the size or amount of something.

We can measure the length, area, volume, mass, time and temperature. There are lots of other things we can measure, but these are the most common.

In the 3rd century BC Egypt, people used their body parts to determine measurements of things.

Some of the units are the span, palm, digit, foot, cubit and pace.

History of Measurement

Span is the distance from the tip of the little finger of the little finger to the tip of the little finger to the tip of the thumb of an outstretched hand

History of Measurements

Palm is the distance across the base of the four fingers that form the palm.

History of Measurements

Digit is the thickness or width of the index finger

History of Measurements

Foot is the length of the foot.

History of Measurements

Cubit is the distance from the tip of the middle finger of an outstretched hand to the front of the elbow

History of Measurements

Pace is the distance of one full step

History of Measurements

System of Measurement

Metric System

US Standard Units or Customary Units

System of Measurement

Metric System

The world standard for measurement. Nowadays the use of the metric system

of measurement is recommended because computations are easier in this system since it uses the power of 10.

There are prefixes that describe each power of 10.

US Standard Units or US Customary Units

A system of measurement used in the United States.

A modern metric system which is the vast majority of U.S. customary units have been defined in terms of the meter and the kilogram.

System of Measurement

Name Symbol Factor

exa- E 1018

peta- P 1015

tera- T 1012

giga- G 109

mega- M 106

kilo- k 103

hecto- h 102

deka- da 101

deci- d 10-1

centi- c 10-2

milli- m 10-3

micro- μ 10-6

nano- n 10-9

pico- P 10-12

femto- f 10-15

Metric System

Measurement Symbol Unit Factor

Length

in inch 12 in = 1 ft

ft foot 3 ft = 1 yrd

mi mile 5280 ft = 1 mi

Mass gal galon 128 fl oz = 1

gal

Weight lb pound 2000 lb = 1

ton

Time sec second 60 sec = 1

min

temperature- f farenheit

degree

10

US Standard Units or US Customary Units

The following sentence may help you remember

the metric units for length from largest to

smallest.( Kate, how does Mel’s

dog catch mice? )

System of Measurement : Metric

System

“Time is a unit of measurement that is gone ina second and can never be given back” “Time is a unit of measurement that is gone ina second and can never be given back”

“Thank you and God Bless!” “Thank you and God Bless!”