Egyptian Numerals The system of ancient Egyptian numerals was used in Ancient Egypt in around 3000 BC It was a system of numeration based on the scale of ten written in hieroglyphs To write a number Egyptians wrote their symbols in order from largest to smallest either in one long line or gro ID: 551242
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Ancient NumeralsSlide2
Egyptian Numerals
The system of ancient Egyptian numerals was used in Ancient Egypt in around 3000 BC
It was a system of numeration based on the scale of ten, written in hieroglyphs
To write a number, Egyptians wrote their symbols in order from largest to smallest, either in one long line or grouped together
They worked with one place at a time, and would use more than one of a symbol to indicate when the value in a place was more than oneSlide3
Digits and Numbers
Value
1
10
100
1,00010,000100,0001millionHieroglyph Description Single strokeHeel boneCoil of ropeWater lilyBent fingerTadpole or frogAstonished manSlide4
Examples Slide5
Roman Numerals
Originated in ancient Rome
Remained the usual way of writing numbers throughout Europe well into the late Middle Ages
Numbers in this system are represented by combinations of letters from the Latin alphabetSlide6
Roman numeric system
Roman numerals are based on seven symbols
Numbers are formed by combining symbols and adding the values
I placed before V or X indicates one less
X placed before L or C indicates 10 less
C placed before D or M indicates a hundred lessBecause each number has a fixed value rather than representing multiples of ten, hundred and so on, according to a position, there is no need for for place keeping zeros.SymbolIVXLCDMValue1510501005001000Slide7
Rules
M D C L X V ISlide8
Examples:
MCMIV
is 1904
MMXCIX
is 2099LXXVII is 7799 is XCIX, not IXIX646 is DCXLVI, not VIIVVISlide9
Mayan Numerals
The
Mayan
numeral system is a vigesimal (base-twenty) positional numeral system used by the Pre-Columbian Maya civilization
The numerals are made of three symbols: zero(shell shape), one (a dot), and five(a bar
)Mayans are the first culture on record to have a special symbol for zeroSlide10
Examples Slide11
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