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# Measurements

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### Measurements

1. 1. Mary Jane R. De Ade BSED 3B/MATH
2. 2. 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.
3. 3. History of Measurement 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.
4. 4. History of Measurements 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
5. 5. History of Measurements Palm is the distance across the base of the four fingers that form the palm.
6. 6. History of Measurements Digit is the thickness or width of the index finger
7. 7. History of Measurements Foot is the length of the foot.
8. 8. History of Measurements Cubit is the distance from the tip of the middle finger of an outstretched hand to the front of the elbow
9. 9. History of Measurements Pace is the distance of one full step
10. 10. System of Measurement Metric System US Standard Units or Customary Units
11. 11. 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.
12. 12. System of Measurement 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.
13. 13. Metric System 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
14. 14. US Standard Units or US Customary Units 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
15. 15. System of Measurement : Metric System The following sentence may help you remember the metric units for length from largest to smallest. ( Kate, how does Mel’s dog catch mice? )
16. 16. “Time is a unit of measurement that is gone in a second and can never be given back”