×16= - = 0.25×100%= 3.6× =
100÷50%= × = 6.4÷8= ÷ =
① ÷[( - )× ]
②( + - )×24
③ ÷[( + )×3]
④35÷[ ×(1- )]
⑤1÷[ -( + )]
⑥ ÷[ ×( + )]