OCR Text |
Show Itt ' tai ants of Old Goodat Good at attit atfaring t tring tit titring ring , Tablets RevealI Reveal RevealIonian I Ionian nlan onian merchants more than thanrs thanrat thanars rat ratrs rs ago knew enough a.bout about a.boutand aboutand . aboutand and compound interest mterest to totheir tof 1 1their their customers rates as asareil asr areil 20 per cent per year , , acto ac- ac acto ac-to ac to - - ) ; to ancient and clay tnblets tablets tnbletsnce tabletstb tabletsnee ' tb nce ace were Babylonian Babyloman text- text textarithmetic texta text-arithmetic text arithmetic - - dld a arithmetic and algebra are ared ared aredld d in libraries at Berlin Berlm and andUmverslty andUniversity 9 , Umverslty University . , I modem modern textbooks of at these thesetIcal theseii theseitical ii i Babyi ii tIcal heal sciences , the Baby Babycuments Babyocuments 1 cuments do not . describeprmelples describelu describe describeprinciples lu luld ld , principles prmelples of calcul.lttln calcullttln calculation calcul.lttlnthPy calculationli calculationthpy . ) li thPy they rehcrnble rebf.mble rebfmble resemble . modern de dech deof dcich of ch mu1lipl.1catwntables as the U1C mu1lipl.1catwn mu1lipl1catwn multiplication multiplicationi1I multiplicationr . i1I tables of tractions fracUons fractions fracUonsOlt fractionsu1 u1 u1one _ Olt one o ) o ) reason why the abillai abJU abill abJUancient abille ai aiancient ancient Babylonian Babyloman ma.th math ma.thOS matht mathns . ri rias OS as and t lft bookkeepers W sveie sveieit wciezed ( > le leed it 0 0ed ed by students of ot the tab tabttt tab1 ttt 1 an nn authority discoveredy discovered1d dIscovered dIscoveredreally 1d 1dreally really meantr meant . I Ir r dUTcrence difference between IinIt/ IinIt BabyIinIt IinItU IinItSf Sf U / Baby n _ _ _ _ _ _ _ Ionian loman lonian and modern mathematics is isthat isthat iathat that the Babylonians did not count countby countby countby by tens , but by sixties sLxtles Numbers Numberslarger Numberslarger Numberslarger larger than 60 were expressed in inpowcrs inpowers inpowers powcrs powers of that number , such as assquares assquares assquares squares or cubes Numbers smallerthan smaller smallerthan smallerthan than CO GO 60 were expressed in tractionsof tractionsot fractionsof tractions fractions ot of 6o-one 6o one 60-one 60 60 - - one hall half , , , one third th1rd , and ahd atid so on on . . |