题目内容
计算:
(1)(-4)×(-6)×(-5);
(2)(-
+
-
)×(-24).
(1)(-4)×(-6)×(-5);
(2)(-
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
(1)(-4)×(-6)×(-5)
=-4×6×5
=-120;
(2)(-
+
-
)×(-24)
=-
×(-24)+
×(-24)-
×(-24)
=12-16+6
=18-16
=2.
=-4×6×5
=-120;
(2)(-
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
=-
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
=12-16+6
=18-16
=2.
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