题目内容
计算：25÷(-5)×
-0.52÷(-
)2×(-1)9
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25÷(-5)×
-0.52÷(-
)2×(-1)9，
=-25×
×
-(
)2÷(
)2×(-1)，
=-1-1×（-1），
=0．
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=-25×
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| 5 |
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=-1-1×（-1），
=0．
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