翻译英语Numbers:Everyone'slanguage.AncientnumbersInancienttimes,peoplewrotenumbersinmanydifferentways.However,theynearlyallcountedintens.ZeroThesystemofnumberstodayconsistsofthenumbersfrom1to9and0(zero).TheIndiansfirstinventedanddevelopedthe1
翻译英语Numbers:Everyone'slanguage.AncientnumbersInancienttimes,peoplewrotenumbersinmanydifferentways.However,theynearlyallcountedintens.ZeroThesystemofnumberstodayconsistsofthenumbersfrom1to9and0(zero).TheIndiansfirstinventedanddevelopedthe1to9systemofnumbers.Theytheninventedthezero.Thiswasaveryimportantinventionbecauseitmadeiteasiertowritebignumbersandtocalculate.CalculatingmachinesOneofthefirstcalculatingmachineswasanabacus.Abacusesarefastandaccurate,sopeoplestillusethemtoday.Ontheabacusinthepicture,thebeadsonthewiresrepresentones,tens,hundredsandthousandsstartingfromthebottomwire.Now,weusemoderncalculators.Thepictureontherightshowsamoderncalculator.Itcanadd,subtract,multiplyanddivide.Itcanalsocalculatepercentagesandsquareroots.