巧算87.41减括号33点27-25点08括号减，9.92？

87.41-（33.27-25.08）-9.92
=87.41-33.27+25.08-（10-0.08）
=87.41-（33.3-0.03）+25.08-10+0.08
=87.41-33.3+0.03+25.08-10+0.08
=54.13+0.03+25.08-10+0.08
=54.16+25.08-10+0.08
=79.24-10+0.08
=69.27+0.08
= 69.35

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