numbers 

Ghiyath al din ibn masoud al khashi

al kashi invented the " demical fractions" also he put a theomry concerning th natrural numbres raised  to th frouth power .

he reached a very acurate rate for approximately ratio that nearly equates the auray of the calulators

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made by : fady gamal

elpharaana Languages school

Exponential Form (Power)	Expanded Form/Repeated Multiplication	Standard Name
106	10x10x10x10x10x10	1000000
105	10x10x10x10x10	100000
104	10x10x10x10	10000
103	10x10x10	1000
102	10x10	100
101	10	10
100	1	1
10-1	1/10	0.1