early counting methods
DESCRIPTION
Early Counting Methods. Early Counting Tokens Tallies. Plain Counting Tokens. Counting Tokens. Ishango Bone. Tally of the Exchequer. Inca Quipu. Base Number Systems. Number Bases Quinary Decimal Duodecimal Vigesimal Sexagesimal. Egyptian Numerals. Egyptian Example. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/1.jpg)
Early Counting◦ Tokens◦ Tallies
Early Counting Methods
![Page 2: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/2.jpg)
Plain Counting Tokens
![Page 3: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/3.jpg)
Counting Tokens
![Page 4: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/4.jpg)
![Page 5: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/5.jpg)
Ishango Bone
![Page 6: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/6.jpg)
Tally of the Exchequer
![Page 7: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/7.jpg)
Inca Quipu
![Page 8: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/8.jpg)
Number Bases◦ Quinary◦ Decimal◦ Duodecimal◦ Vigesimal◦ Sexagesimal
Base Number Systems
![Page 9: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/9.jpg)
Egyptian Numerals
![Page 10: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/10.jpg)
Egyptian Example
![Page 11: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/11.jpg)
Babylonian Numerals
![Page 12: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/12.jpg)
Cuneiform Tablet
![Page 13: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/13.jpg)
Mayan Numerals
![Page 14: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/14.jpg)
Greek Numerals
![Page 15: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/15.jpg)
I=1 V=5 X=10 L=50 C=100 D=500 M=1000
Roman Numerals
![Page 16: Early Counting Methods](https://reader034.vdocuments.us/reader034/viewer/2022051317/56816720550346895ddba1e1/html5/thumbnails/16.jpg)
IV=4 IX=9 XL=40 XC=90 CD=400 CM=900
Only symbols that are powers of 10 can be subtracted, and only from the next two largest values.
Roman Numerals: Subtraction