(1)25÷([8/9]-[1/3])
=25÷[5/9]
=45.
答:这个数是45.
(2)18×[2/9]+36÷[6/7]
=4+42
=46.
答:和是46.
(3)[5/6]×75%-[3/8]
=[5/8]-[3/8]
=[1/4].
答:这个数是[1/4].
(4)60÷(1-[1/6])
=60÷[5/6]
=72(千克).
答:苹果有72千克.
(1)25÷([8/9]-[1/3])
=25÷[5/9]
=45.
答:这个数是45.
(2)18×[2/9]+36÷[6/7]
=4+42
=46.
答:和是46.
(3)[5/6]×75%-[3/8]
=[5/8]-[3/8]
=[1/4].
答:这个数是[1/4].
(4)60÷(1-[1/6])
=60÷[5/6]
=72(千克).
答:苹果有72千克.