①350÷(91-86)
②189+386+269
③(75-69)×70
④802-136+244
⑤60+40×7
⑥1000-654-217
①(643-580)÷7
②476+9×5
③700-(274+148)
④300-128+172
①216÷(18×6)
② × + ÷
③( - )× ×36
④125%×2.5×3.2
⑤4.67-(0.67+2.98)
⑥ ÷[2÷( - )]
①36×()
②1.3×37.5%+2.7×
③ [()]
④13÷()×
①
②36×()
③
④
⑤3.24×0.76+3.24×0.24
⑥