问题
解答题
|
答案
(1)0.25×12.5×8,
=0.25×(12.5×8),
=0.25×100,
=25;
(2)6.4×
+2 5
×3.6,2 5
=(6.4+3.6)×
,2 5
=10×
,2 5
=4;
(3)[1-(
-1 3
)]×1 5
,15 26
=[1-
]×2 15
,15 26
=
×13 15
,15 26
=
.1 2
|
(1)0.25×12.5×8,
=0.25×(12.5×8),
=0.25×100,
=25;
(2)6.4×
+2 5
×3.6,2 5
=(6.4+3.6)×
,2 5
=10×
,2 5
=4;
(3)[1-(
-1 3
)]×1 5
,15 26
=[1-
]×2 15
,15 26
=
×13 15
,15 26
=
.1 2