题目内容
| 下列各题怎样简便就怎样计算. 0.125×25×32 |
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| (
|
(1)0.125×25×32,
=(0.125×8)×(4×25),
=1×100,
=100;
(2)
÷
×
,
=
×
×
,
=
;
(3)
-(
+
),
=
-
-
,
=1-
,
=
;
(4)(
+
-
)×20,
=
×20+
×20-
×20,
=5+16-14,
=7.
=(0.125×8)×(4×25),
=1×100,
=100;
(2)
| 3 |
| 5 |
| 5 |
| 6 |
| 5 |
| 18 |
=
| 3 |
| 5 |
| 6 |
| 5 |
| 5 |
| 18 |
=
| 1 |
| 5 |
(3)
| 20 |
| 17 |
| 3 |
| 17 |
| 2 |
| 3 |
=
| 20 |
| 17 |
| 3 |
| 17 |
| 2 |
| 3 |
=1-
| 2 |
| 3 |
=
| 1 |
| 3 |
(4)(
| 1 |
| 4 |
| 4 |
| 5 |
| 7 |
| 10 |
=
| 1 |
| 4 |
| 4 |
| 5 |
| 7 |
| 10 |
=5+16-14,
=7.
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