问题
解答题
|
答案
(1)(
-1 4
÷2)÷1 10 3 10
=(
-1 4
)×1 20
,10 3
=
×1 5
,10 3
=
;2 3
(2)
×2 5
+40%×6 11 5 11
=
×2 5
+6 11
×2 5
,5 11
=
×(2 5
+6 11
),5 11
=
×1,2 5
=
;2 5
(3)17×(
+1 15
)×152 17
=
×15×17+1 15
×17×15,2 17
=17+30,
=47;
(4)
÷[(4 5
+1 3
)×2 5
]4 11
=
÷[4 5
×11 15
],4 11
=
×4 5
,15 4
=3;
(5)(
-1.8)÷[(1.15+27 5
)×13 20
]5 3
=(5.4-1.8)÷[(1.15+0.65)×
],5 3
=3.6÷[1.8×
],5 3
=3.6÷3,
=1.2.