题目内容
72
×2.375+95
×1.6．
| 8 |
| 21 |
| 5 |
| 21 |
72
×2.375+95
×1.6，
=72
×2
+95
×1
，
=72
×
+95
×
，
=72×
+
×
+95×
+
×
，
=171+
+152+
，
=（171+152）+（
+
），
=323+
，
=324
．
| 8 |
| 21 |
| 5 |
| 21 |
=72
| 8 |
| 21 |
| 3 |
| 8 |
| 5 |
| 21 |
| 3 |
| 5 |
=72
| 8 |
| 21 |
| 19 |
| 8 |
| 5 |
| 21 |
| 8 |
| 5 |
=72×
| 19 |
| 8 |
| 8 |
| 21 |
| 19 |
| 8 |
| 8 |
| 5 |
| 5 |
| 21 |
| 8 |
| 5 |
=171+
| 19 |
| 21 |
| 8 |
| 21 |
=（171+152）+（
| 19 |
| 21 |
| 8 |
| 21 |
=323+
| 27 |
| 21 |
=324
| 2 |
| 7 |
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