题目内容
简便计算
| 536-198 | 0.75×5.3+4.7×0.75 | 1
|
(1)536-198
=536-(200-2),
=536-200+2,
=336+2,
=338;
(2)0.75×5.3+4.7×0.75
=(5.3+4.7)×0.75,
=10×0.75,
=7.5;
(3)1
-
+
-
=1
+
-(
+
),
=2-1,
=1.
=536-(200-2),
=536-200+2,
=336+2,
=338;
(2)0.75×5.3+4.7×0.75
=(5.3+4.7)×0.75,
=10×0.75,
=7.5;
(3)1
| 3 |
| 4 |
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
=1
| 3 |
| 4 |
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 6 |
=2-1,
=1.
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