问题
解答题
|
答案
(1)9.4×
+0.25×1 4
,3 5
=9.4×0.25+0.25×0.6,
=(9.4+0.6)×0.25,
=10×0.25,
=2.5;
(2)
÷[1÷(1 6
-3 5
)],3 10
=
÷[1÷1 6
],3 10
=
÷1 6
,10 3
=
;1 20
(3)(
+7 10
-5 6
)×30×2,4 5
=(
+7 10
-5 6
)×(30×2),4 5
=(
+7 10
-5 6
)×60,4 5
=
×60+7 10
×60-5 6
×60,4 5
=42+50-48,
=92-48,
=44;
(4)
×(3 14
-3 4
÷2),1 10
=
×(3 14
-3 4
),1 20
=
×3 14
,14 20
=
.3 20