题目内容
计算.
860÷[(150+280)÷10]
721÷[210÷(750+25)].
860÷[(150+280)÷10]
721÷[210÷(750+25)].
860÷[(150+280)÷10],
=860÷[430÷10],
=860÷43,
=20;
721÷[210÷(750+25)],
=721÷[210÷775],
=721÷
,
=2660
.
=860÷[430÷10],
=860÷43,
=20;
721÷[210÷(750+25)],
=721÷[210÷775],
=721÷
| 210 |
| 775 |
=2660
| 5 |
| 6 |
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