题目内容
1994
×79+790×
+244.9.
| 1 |
| 2 |
| 6 |
| 25 |
1994
×79+790×
+244.9,
=1994.5×79+790×0.24+244.9,
=199.45×790+790×0.24+790×0.31,
=199.45×790+790×0.24+790×0.31,
=790×(199.45+0.24+0.31),
=790×200,
=158000;
| 1 |
| 2 |
| 6 |
| 25 |
=1994.5×79+790×0.24+244.9,
=199.45×790+790×0.24+790×0.31,
=199.45×790+790×0.24+790×0.31,
=790×(199.45+0.24+0.31),
=790×200,
=158000;
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