| 2 |
| 9 |
| 4 |
| 25 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 12 |
| 2 |
| 9 |
| 4 |
| 25 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 12 |
=（
| 4 |
| 25 |
| 2 |
| 9 |
| 3 |
| 8 |
| 7 |
| 12 |
=1×2
| 2 |
| 9 |
| 7 |
| 12 |
=2
| 2 |
| 9 |
| 7 |
| 12 |
=2
| 2 |
| 9 |
| 5 |
| 12 |
=1
| 1 |
| 87 |
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(229×425+0.84×229)÷[4.375-(238+1712)]．
编辑：chaxungu时间：2026-04-27 13:18:28分类：小学数学题库
(2
×
+0.84×2
)÷[4.375-(2
+1
)]．（2
×
+0.84×2
）÷[4.375-（2
+1
）]
=（
+0.84）×2
÷[4.375-（2
+1
）]，
=1×2
÷[4.375-（2.375+1
）]，
=2
÷[4-1
]，
=2
÷2
，
=1
．
=（
=1×2
=2
=2
=1
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