题目内容
脱式计算.
5-5×
| 5×25%×20+3.2 | 8×
|
(1)5-5×
| 2 |
| 5 |
| 3 |
| 5 |
=5-2+
| 3 |
| 5 |
=3+
| 3 |
| 5 |
=3
| 3 |
| 5 |
(2)5×25%×20+3.2,
=5×20×25%+3.2,
=100×25%+3.2,
=25+3.2,
=28.2;
(3)8×
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 4 |
=6-
| 9 |
| 4 |
| 3 |
| 4 |
=6-(
| 9 |
| 4 |
| 3 |
| 4 |
=6-3,
=3.
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