题目内容
计算:
(1)
×
(2)2
×3
×
(3)
×
(4)3
•
.
(1)
| 3 |
| 6 |
(2)2
| 10 |
| 5 |
| 8 |
(3)
| 1 |
| 3 |
| 27 |
| 1 |
| 2 |
| 12 |
(4)3
| a2b3 |
| 1 |
| 2 |
|
(1)原式=
=
=3
;
(2)原式=2
×3
×2
=(2×3×2)
=12
=120;
(3)原式=
×
=3;
(4)原式=(3×
)
=
=
b2
.
| 3×6 |
=
| 18 |
=3
| 2 |
(2)原式=2
| 10 |
| 5 |
| 2 |
=(2×3×2)
| 10×5×2 |
=12
| 100 |
=120;
(3)原式=
| 3 |
| 3 |
=3;
(4)原式=(3×
| 1 |
| 2 |
a2b3×
|
=
| 3 |
| 2 |
| ab4 |
=
| 3 |
| 2 |
| a |
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