题目内容
3
×1.25+375×0.975-3.75×87
.
| 3 |
| 4 |
| 1 |
| 2 |
3
×1.25+375×0.975-3.75×87
=3.75×1.25+375×0.975-3.75×87.5,
=3.75×1.25+3.75×97.5-3.75×87.5,
=3.75×(1.25+97.5-87.5),
=3.75×11.25,
=42.1875.
| 3 |
| 4 |
| 1 |
| 2 |
=3.75×1.25+375×0.975-3.75×87.5,
=3.75×1.25+3.75×97.5-3.75×87.5,
=3.75×(1.25+97.5-87.5),
=3.75×11.25,
=42.1875.
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