题目内容
计算下面各题.
| 9.8-1.8×0.45 |
| (
| (
|
(1)9.8-1.8×0.45,
=9.8-0.81,
=8.99;
(2)
| 5 |
| 7 |
| 2 |
| 7 |
| 2 |
| 21 |
=
| 5 |
| 7 |
=3
| 5 |
| 7 |
(3)(
| 5 |
| 6 |
| 1 |
| 8 |
| 5 |
| 12 |
=
| 17 |
| 24 |
| 5 |
| 12 |
=
| 17 |
| 10 |
(4)(
| 8 |
| 9 |
| 4 |
| 15 |
| 5 |
| 9 |
| 6 |
| 25 |
=(
| 10 |
| 3 |
| 5 |
| 9 |
| 6 |
| 25 |
=
| 25 |
| 9 |
| 6 |
| 25 |
=
| 2 |
| 3 |
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