题目内容
计算.
(1)(-2)×(-
)×(-3);
(2)(-0.1)×1000×(-0.01);
(3)2.3×4.1×0×(-7);
(4)(-
)×(-
)×
×(-
).
(1)(-2)×(-
| 1 |
| 2 |
(2)(-0.1)×1000×(-0.01);
(3)2.3×4.1×0×(-7);
(4)(-
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 9 |
| 8 |
(1)原式=-(2×
×3)=-3;
(2)原式=0.1×1000×0.01=1;
(3)原式=0;
(4)原式=-(
×
×
×
)=-
.
| 1 |
| 2 |
(2)原式=0.1×1000×0.01=1;
(3)原式=0;
(4)原式=-(
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 9 |
| 8 |
| 9 |
| 32 |
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