口算。8q/s's(](F
(1)35÷7×6=;I)@(O8t0}7C3T,k)y(?;_0w5|*B9@)c.d4K (2)(55-22)×7='].V2g,a+e7D)d0m+U8q/s's(](F
(3)18+22-15=/t:G1e7}5?(M3Z5w;u(4)33-13+28=*^+Q'F4y8\2F7_-k*};P/x8q/s's(](F
(5)18×4×125=-@1Y8g/L3n+W1t;s;m,o2T1| (6)150×2+50=2W/V6f.F6^3y.Z/P8q/s's(](F