题目内容
72.5×0.825+10
×7
-0.19×725.
| 3 |
| 4 |
| 1 |
| 4 |
72.5×0.825+10
×7
-0.19×725
=72.5×0.825+10.75×7.25-0.19×725,
=7.25×8.25+10.75×7.25-19×7.25,
=(8.25+10.75-19)×7.25,
=0×7.25,
=0.
| 3 |
| 4 |
| 1 |
| 4 |
=72.5×0.825+10.75×7.25-0.19×725,
=7.25×8.25+10.75×7.25-19×7.25,
=(8.25+10.75-19)×7.25,
=0×7.25,
=0.
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