题目内容
| 脱式计算.(能简算的要简算) 0.25×12.5×8 | 6.4×
| [1-(
|
(1)0.25×12.5×8,
=0.25×(12.5×8),
=0.25×100,
=25;
(2)6.4×
+
×3.6,
=(6.4+3.6)×
,
=10×
,
=4;
(3)[1-(
-
)]×
,
=[1-
]×
,
=
×
,
=
.
=0.25×(12.5×8),
=0.25×100,
=25;
(2)6.4×
| 2 |
| 5 |
| 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 |
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