73 ÷9 =
64 ÷8=
55 ÷6 =
76÷8=
⑴88-(46-18)
=
⑵63÷(44-37)
⑶42-42÷7
(得数用循环小数表示)
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]