资源描述
84÷[(8+6)×2] 42×[169-(78+35)]
72÷[960÷(245-165)] 540÷[(3+6)×2]
180÷[36÷(12+6)] 450÷[(15+10)×3]
[64-(87-42)]×15 2400÷[1200÷(600÷15)]
900÷[2×(320-290)] [492-(238+192)]×26
[196+(84-12)]×5 720÷[(187+18)÷41]
14×[(845-245)÷12] [668-(132+245)]÷9
12×[(76+57)÷19] 768÷[8×(76-68)]
130×[(600-235)÷7] 14×[(860-260)÷15]
840÷[15×(32-28)] 909-[36×(350÷14)]
963÷[732-(496+227)] 17×[586-(863-365)]
863×[183-(521-338)] 342÷[(2268÷6)÷21]
87×[386-(238+79)] 2070÷[(1804-274)÷17]
72÷[960÷(245-165)] 490÷[210÷(750÷25)]
540÷[(3+6)×2] 180÷[36÷(12+6)]
84÷[(8+6)×2] 42×[169-(78+35)]
[175-(49+26)]×23 [64-(87-42)]×15
450÷[(15+10)×3] 756÷[4×(56-35)]
2400÷[1200÷(600÷15)] 900÷[2×(320-290)]
[196+(84-12)]×5| 12×[(76+57)÷19]
[492-(238+192)]×26 720÷[(187+18)÷41]
480÷[4×(50-40)] 14×[(845-245)÷12]
[668-(132+245)]÷97 14×[(860-260)÷15]
768÷[8×(76-68)] 130×[(600-235)÷73
[203-(25+75)]×16 840÷[15×(32-28)]
380÷[240÷(36÷3)] 115-(15+20)×3
909-[36×(350÷14)] 640÷[140÷(630÷9)]
[368-(132+129)]×34 490÷[210÷(360÷12)]
72÷[2×(105-87)] 480÷[ (50+10)×2]
72÷[960÷(245-165)] [175-(49+26)]×23
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