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1、2800 100789 (947599)764 36(1527623) (932521)9 723(521504)25 (3921)(3966)5071363498 38412331 37(7+6) 30 16(17-8)3 28(5+9632) 81(72-54)9 571256035 8486401612 960(15003245) 192(5438)6 (12+24+80)50 32(25+125)123181233+85123 25(24+16) 17899+178 (140-70)54 63+84242 4907+24545+24012 157+857 (46-20)30-90252
2、74 (404)25 240080142 108(8336060) (42048)(375345) 290(343+99) 142549+14 75425 1676766 720362 9953+53 4502(169)245(45+39) 125(84)5 4125-25420(205198)4 460(29183) (960400)70(140-70)54 63+84242 4907+245266-110 157+857 (46-20)30-90(404)25 240080142 108(8336060)(42048)(375345) 290(343+99) 142549+14 16767
3、66 9953+53 4502(169)245(45+39) 125(84)5 4125-25420(205198)4 460(29183) (960400)70 45+24012 124+78+22 100-35-25 (140-70)54 63+84242 4907+245266-110 (46-20)30-90 157+857 (404)25 240080142 108(8336060)(42048)(375345) 290(343+99) 142549+14 1676766 9953+53 4502(169)245(45+39) 4125-25 420(205198)X4460(291
4、83) (960400)70 43+3155 426-2793 98-194+62 51+1217 843-1368 (32+28)6 32513(266-250)55+720(40-35) (220-180)8 36(287+23) (38+42)(52535) (135-72)7 7217528(2466-32) 340-240205 (58+12)(968)10663 248302 52430 364273 (13525)406 18(7958)27(33889-19)34 (640+75015)15 (72-57)38 892-(90562) 69(800700)5 254+320 8
5、22+59 328+125 85+324 813+311 13515+26 107-353 2063-1284 (482-42)22-17 573-12 16812-4812 18213+20813 52521-37821 3256-6 48+426-12 60-(303+3)3113-22819 (15622432)80 345(128-5319) 776-(736152) 802+1005 45-2034140-205+25 2030+2040 25(30+10)80040-40040 600(12060) (26+14)70(26+14)(70-40) 90(301550)(35+45)
6、(90-10)610-(21+29) 25(22+263) 80(32+8)3003000-(32+8)30 30169-(60+9) 320-(120+254)36(3+6)2180(3612)+6 45015+103(40+18030)2(240+180)(302) 800-8008030800-(706+180) 65(40+203) 36+360125121+795 456+356 675-375398-639 32678-32668 12090-11090125(8+4) 12(40-5) 527+635649-149 23134-3423 6848+685248101-48 655
7、+355 492587932+796867101-67 2567-567(75255)40 280025480 (380804)606550+3550270+3870 4(2565+2528)125474725 340(120408) 45(720195719)86+4500+(208836)2 120-36418+35 (58+37)(64-95).(8020+80)4 36040+10 4020-200(80-25)X2 (350-80)9 360(126)5 288(2614)8 5006-(502-80) (10512635)25 864(2723)12 (453816)24 500(240386) 64(8742) 15 (845153)16 12(4928)7 450(8448 )12 (58+37)(64-95) 95(64-45) 178-14556+42 812-700(9+3111) 85+14(14+20826) (284+16)(512-820818) 120-36418+35 (58+37)(64-95)