问题
解答题
|
答案
(1)5×0.125×16,
=5×0.125×2×8,
=(5×2)×(0.125×8),
=10×1,
=10;
(2)(
-3 4
÷4)×1 5
,5 14
=(
-3 4
)×1 20
,5 14
=
×14 20
,5 14
=
;1 4
(3)8.5×
+7.5×75%,3 4
=8.5×75%+7.5×75%,
=(8.5+7.5)×75%,
=16×75%,
=12;
(4)80%×45-60%÷
,1 45
=80%×45-60%×45,
=(80%-60%)×45,
=20%×45,
=9;
(5)
÷[(1 4
-3 5
)×1 4
],2 7
=
÷[1 4
×7 20
],2 7
=
÷1 4
,1 10
=
;5 2
(6)
÷[(3 4
+1 4
)-3 5
],3 4
=
÷[(3 4
-17 20
],3 4
=
÷3 4
,1 10
=
.15 2