问题
解答题
18×14÷78
(45+310)÷310
56÷(12+56)
34÷1516÷56.
答案
(1)18×14÷78,
=252÷78,
=
;42 13
(2)(45+310)÷310,
=45÷310+310÷310,
=
+1,9 62
=1
;9 62
(3)56÷(12+56),
=56÷68,
=
;14 17
(4)34÷1516÷56,
=
×17 758
,1 56
=
.17 42448