1、脱式计算819877 665+774 921+74 8062 = = = = = = =7707+65 807202 100505 35357 = = = = = = =302302 60083 401005 43425 5 = = = = = = =60 123 648 456 640604 1578 = = = = = = =42736 374 19 10420 453268 = = = = = = =255242 35556 7296 21456 = = = = = = = =500(400396) 7295 564+264-453 7650-(546+4530) = = = = = =
2、 =659-450 980+980 9000-(4500+250) 6700+728 = = = = = = =146+45 900(71-68) 1809-7 645 3 = = = = = = =8(910-720) 760-540+1110 6500+1250-350 8030+5600 = = = = = = =9450-3200-4200 2400645 800 7180 16002230 = = = = = = =4000 8 + 350 320864 270 3 9 630 9 + 320 = = = = = = =2800+32 6 30069 (6900-2400) 5 （7
3、2 9）X8 = = = = = = =999 9 8 280 4 5 608+1570 60(23-17) = = = = = = =96049 35059 4505+1250 (6900-2400)5 = = = = = = =7515 125 309066 (38787)X4 16016080 = = = = = = =7505505 (111189)3 1258100 62500= = = = = = =187299299 587496674 26602626 1566+657 = = = = = = =32(322) 300(300222) 65205 33901095 = = =
4、= = = =687（9967） 568（100094） 356020 90 6879993 = = = = = = =96049 35059 4505+1250 (6900-2400)5 = = = = = = =309066 (387383)X450 7505505 (111189)3 = = = = = = =1258100 62500 81046 33329 = = = = = = =187299299 587496674 26602626 153X6+657 = = = = = = =32X(32+16) 300(300222) 33901095 687（99 67） = = = = = = =
