问题
解答题
864÷[(27-23)×12]
450-150÷30+270.
答案
(1)864÷[(27-23)×12]
=864÷[4×12]
=864÷48
=18;
(2)450-150÷30+270
=450-5+270
=445+270
=715.
864÷[(27-23)×12]
450-150÷30+270.
(1)864÷[(27-23)×12]
=864÷[4×12]
=864÷48
=18;
(2)450-150÷30+270
=450-5+270
=445+270
=715.