1、小学四年级数学上册脱式计算练习题2800 100789 (947599 )764 (80-25)X2 (932521)9 723(521504)25 (3921)(3966)5071363 498 38412331 2337(7+6 )30 571256035 8486401612 (42048)(375 345)960( 15003245 ) (12+24+80)50 63+84242 45+24012 157+857 (46-20 )30-90240080142 142549+14 1676766 4502(16 9 ) 420(205 198)4 (960400)70 (140-70)
2、54 63+84242 4907+245(142549+14 24008014 2 (420 48)(375345)(42048)(375345) 420(205198)4 1676766 4502(169 ) 125(84)5 63+84242 4907+245 (46-20)30-90 157+857 240080142 14254 9+14 1676766 4502(169 ) 420(205198)X4 460(29183) 2513(266-250) 55+720(40-35) 45-2034(38+42)(52535) 340-240205 (58+12)(968) 36427 3
3、 (13525)40 6 (33889-19)34 69(800700)5 2063-1284 (482-42)22-17 16812-4812 18213+20813 52521-37821 3256-6 48+426-12 60-(303+3)3113-22819 345(128-5319) 802+1005 140-205+25 2030+2040 25(30+10)80040-40040 600(12060) (26+14)70(26+14)(70-40) (35+45)(90-10) 125474725610-(21+29) 80(32+8)300 120-36418+35 180(
4、3612)+6 45015+103 (350-80 )9(40+18030)2 (240+180)(302) 800-8008030800-(706+180) 65(40+203) 36+360125121+795 456+356 675-375 398-639 32678-32668 12090-11090125(8+4) 12(40-5) 527+635649-149 23134-3423 6848+6852 48101-48 655+355 492587932+7968 67101-67 2567-567 (75255)40 280025480 4020-2006550+3550 270+3870 36040+10178-14556+42 95(64-45) 120-36418+35