题目内容
怎样算简便怎样算.
| (
|
(1)
×
+
×0.75,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(2)(
+
+
)×12,
=
×12+
×12+
×12,
=4+3+2,
=9;
| 3 |
| 4 |
| 8 |
| 9 |
| 1 |
| 9 |
=
| 3 |
| 4 |
| 8 |
| 9 |
| 1 |
| 9 |
| 3 |
| 4 |
=
| 3 |
| 4 |
| 8 |
| 9 |
| 1 |
| 9 |
=
| 3 |
| 4 |
=
| 3 |
| 4 |
(2)(
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 6 |
=
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 6 |
=4+3+2,
=9;
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