题目内容
计算:
(1)(-3)÷(-1
)×0.75÷(-
)×(-6);
(2)(-
)×(-0.1)÷
×(-10);
(3)[(-72)×(-
)]×[(-
)÷(-
)].
(1)(-3)÷(-1
| 3 |
| 4 |
| 3 |
| 7 |
(2)(-
| 1 |
| 5 |
| 1 |
| 25 |
(3)[(-72)×(-
| 2 |
| 3 |
| 3 |
| 5 |
| 8 |
| 15 |
(1)原式=3×
×
×
×6
=
;
(2)原式=-(
×
×25×10)
=-5;
(3)原式=(72×
)×(
×
)
=48×
=54.
| 7 |
| 3 |
| 3 |
| 4 |
| 7 |
| 3 |
=
| 147 |
| 2 |
(2)原式=-(
| 1 |
| 5 |
| 1 |
| 10 |
=-5;
(3)原式=(72×
| 2 |
| 3 |
| 3 |
| 5 |
| 15 |
| 8 |
=48×
| 9 |
| 8 |
=54.
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