「小学三年级数学脱式计算」.doc

脱式计算8244x3 （601-246）5 201+232-365= = = = =（25+38）x15 （59-187）3 1500-125x8= = = = =25x8x9 （601-246）5 201+232-365= = = = =(25+33)X26 2+3x56= 63x147-198= = = = =735-35x12= 540(65-59) 789-13x45= = = = =224221 213410 402174= = = = =147728 94420 2804= = = = =12052 202369 305240= = = = =819877 665+774 921+74= = = = =8062 7707+65 807202= = = = =100505 35357 302302 = = = = =60083 401005 434255 = = = = =60123 648456 640604 = = = = =567366 500(400396) 7295= = = = =564+264-453 7650-(546+4530) 659-450= = = = =980+980 9000-(4500+250) 6700+728= = = = =146+95 900(71-68) 1809-426= = = = =126453 8(910-720) 760-540+1110= = = = = 6500+1250-3500 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 （729）(568) 54 9 8= = = = =280 4 5 608+1570 60(23-17) = = = = =224221 213410 402174= = = = =147728 94420 2804= = = = = 12052 202369 305240= = = = =819877 665+774 921+74= = = = =8062 7707+65 807202= = = = =100505 35357 302302 = = = = =60083 401005 434255 = = = = =60123 648456 640604 = = = = = 57486 427366 374198= = = = =104204 153105 255426= = = = =35587 729366 214549 = = = = = 72895 364212 255164 = = = = =567366 500(400396) 7295= = = = =564+264-453 7650-(546+4530) 659-450= = = = =980+980 9000-(4500+250) 6700+728= = = = =146+95 900(71-68) 1809-426= = = = =126453 8(910-720) 760-540+1110= = = = =6500+1250-3500 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 （729）(568) 54 9 8= = = = =280 4 5 608+1570 60(23-17) = = = = =96049 35059 4505+1250 = = = = =(6900-2400)5 7515205 309066= = = = =(387387)0 16016080 7505505= = = = =(111189)3 1258100 62500 = = = = =(17)(166) 81044 331149= = = = =187299299 587496674 26602626= = = = =153153+657 32(3216) 300(300222)= = = = =7515205 （15075）（2520） = = =33901095 687（9967）= = = = 1000（1000988） 35602090= = = = （250150）(306) 6879993= = =（4870-3675）72009 (9467-5642)(35070)= = = = 96049 35059 4505+1250 = = = = = (6900-2400)5 7515205 309066= = = = = (387387)0 16016080 7505505= = = = = (111189)3 1258100 62500 = = = = = (17)(166) 81044 331149= = = = =187299299 587496674 26602626= = = = =153153+657 32(3216) 300(300222)= = = = = 751