英语翻译
Numbers:Everyone’slanguageHowmanylanguagedoyouknow?Everyoneknowsatleasttwo—hisorherownlanguageandtheinternationallanguageofnumbers.AncientnumbersInancienttimes,peoplewrotenumbersinmanydifferentways.However,theynearlyallcountedintens.ZeroThesystemofnumberstodayconsistsofthenumbersfrom1to9and0.TheIndiansfirstinventedanddevelopedthe1to9systemofnumbers.Theytheninventedthezero.Theinventionofthezerohelpedpeoplewritebignumbersandcalculatemoreeasily.Nowuseeachofthesetennumbersoncetowritethebiggestnumber.WhatisitCalculatingmachinesOneofthefirstcalculatingmachineswasanabacus.Abacusesarefastandaccurate.Ontheabacus,thebeadsonthewiresstandforones,tens,hundredsandthousands,startingfromthebottomwire.Theabacusinthepictureshowsanumber.Writeitdowninfiguresandtheninwords.Multiplyitbyzeroandthenadd1.Whatistheanswer?Modernelectroniccalculatorscanadd,subtract,multiplyanddivide.Itcanalsocalculatepercentagesandsquareroots.Computersareverypowerfulcalculatingmachines.Acomputercandoacalculationinaflash PS:加粗字体为标题.请尽量不要用翻译器,