美索不达米亚(Mesopotamia) 两河流域 LEGEND Turkey SATELLITE IMAGE AVAILABLE "Erbil Kirkuk. Iran Syria Tharth fikrit. Lake Baghdad Razzaza Lake Jordan Iraq Basra. Saudi Arabia Kuwait RO盟 map created with: www.curious-software.com
美索不达米亚(Mesopotamia) —两河流域
楔形文字一泥板书 U1天1天于
楔形文字—泥板书
T 11 41 2 12 552 3 125 4 24 34 14 54 5 15 25 35 45 55 6 6 36 46 .66 7 8 7189 267269 88 9 39 19 58 10 20 30 40 女 50 59 ▣60进位位值制(sexagesimal system)
o 60进位位值制(sexagesimal system)
T《预 =2×60+25=145 m《7及秤 =3×602+31×60+49=12709
=3× +31×60+49=12709. 2 60 = 2×60+25=145