问题
解答题
|
答案
(1)320×50-24111÷57,
=16000-423,
=15577;
(2)86420-11928÷28×60,
=86420-426×60,
=86420-25560,
=60860;
(3)3.8-1.395÷0.31×0.5,
=3.8-4.5×0.5,
=3.8-2.25,
=1.55;
(4)0.15×(6.52-1.83)÷70,
=0.15×4.42÷70,
=0.663÷70,
=
;663 7000
(5)(
-11 18
)÷(2 9
+3 8
),3 20
=
÷7 18
,21 40
=
;20 27
(6)8÷3-(
-6 7
),1 4
=8÷3-
,17 28
=
-8 3
,17 28
=
.173 84