问题
解答题
下列各题怎样算简便就怎样算.
|
答案
(1)
×2 3
÷5 4
,10 9
=
×2 3
×5 4
,9 10
=
;3 4
(2)(
-1 4
)×60,1 20
=
×60-1 4
×60,1 20
=15-3,
=12;
(3)
÷(2 3
+1 6
),1 9
=
÷2 3
,5 18
=
;12 5
(4)
÷[3 4
÷(5 16
-2 3
)],1 4
=
÷[3 4
÷5 16
],5 12
=
÷3 4
,3 4
=1;
(5)7×
+7.3×25%,1 4
=7×0.25+7.3×0.25,
=0.25×(7+7.3),
=0.25×14.3,
=3.575.