
80÷2+76÷4 45-20×6÷5 28+84÷7-13 25×(22+576÷32)
(75+49)÷(75-44) 6×58-(74+) 540÷(30×15÷50)
75×12+280÷35 (5-18×24)÷12 48×(32-17)÷30
714÷(30+180÷15) 68+185÷(5+23) 800-432÷(6×9)
6×90÷9-6 480÷3÷(3+2) 32×3-18-32 97×4+202×3
680+21×15-360 (736÷16+27)×18 (87+16)×(5-19)
525÷[(81-56)×3] 42×[169-(78+35)] 72÷[960÷(245-165)]
[175-(48+36)]×78 495÷[15×(69÷23)] 12×[162÷(21-3)]
540÷[(3+6)×2] 180÷[36÷(12+6)] [175-(49+26)]×23
490÷[210÷(180÷12)] 630÷[134-(19+25)] 328+(425-376+37)
720÷(18-12)÷2 (720÷18-12)÷2 720÷(18-12÷2)
720÷[(18-12)÷2] (26+14)×70-30 26+[14×(70-30)]
