题目内容
计算
(1)(-4
)×1.25×(-8).
(2)
×(-2.4)×
.
(3)2
×(-7).
(1)(-4
| 1 |
| 20 |
(2)
| 5 |
| 6 |
| 3 |
| 5 |
(3)2
| 13 |
| 14 |
(1)原式=-
×[1.25×(-8)]=
;
(2)原式=
×
×(-2.4)=-1.2;
(3)原式=
×(-7)=-
.
| 81 |
| 20 |
| 81 |
| 2 |
(2)原式=
| 5 |
| 6 |
| 3 |
| 5 |
(3)原式=
| 41 |
| 14 |
| 41 |
| 2 |
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