题目内容
怎样简便就怎样算.
2.7×
| 24×[(
| 143-6.46-3.54. |
(1)2.7×
+1.3×
,
=(2.7+1.3)×
,
=4×
,
=3;
(2)24×[(
-
)÷
],
=24×[
÷
],
=24×
,
=12;
(3)143-6.46-3.54,
=143-(6.46+3.54),
=143-10,
=133.
| 3 |
| 4 |
| 3 |
| 4 |
=(2.7+1.3)×
| 3 |
| 4 |
=4×
| 3 |
| 4 |
=3;
(2)24×[(
| 5 |
| 6 |
| 3 |
| 4 |
| 1 |
| 6 |
=24×[
| 1 |
| 12 |
| 1 |
| 6 |
=24×
| 1 |
| 2 |
=12;
(3)143-6.46-3.54,
=143-(6.46+3.54),
=143-10,
=133.
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