题目内容
计算:
(1)-
•
;
(2)
•
•
;
(3)
•2
•(-
);
(4)
x•
•
.
(1)-
| 3 |
| (-16)×(-36) |
(2)
| 2 |
| 1 |
| 3 |
| 3 |
| 6 |
(3)
1
|
| 3 |
| 1 |
| 2 |
| 10 |
(4)
| 10 |
| 10-1y |
| 100z |
(1)原式=-
•
=-
•
•
=-
•4×6=-24
;
(2)原式=
•
=
•
=
×6=2;
(3)原式=2×(-
)×
=-
=-4
;
(4)原式=
=
=10
.
| 3 |
| 16×36 |
| 3 |
| 16 |
| 36 |
| 3 |
| 3 |
(2)原式=
| 1 |
| 3 |
| 2×3 |
| 6 |
| 1 |
| 3 |
| 6 |
| 6 |
| 1 |
| 3 |
(3)原式=2×(-
| 1 |
| 2 |
|
| 48 |
| 3 |
(4)原式=
10x×
|
| 100xyz |
| xyz |
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