问题
解答题
脱式计算.
|
答案
(1)5400-2940÷28×27,
=5400-105×27,
=5400-2835,
=2565;
(2)
×1 4
+3 7
÷4,4 7
=
×1 4
+3 7
×4 7
,1 4
=
×(1 4
+3 7
),4 7
=
;1 4
(3)
÷[2-(11 18
+1 4
)],5 6
=
÷[2-11 18
],13 12
=
÷11 18
,11 12
=
.2 3