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652×1.25+5点45×12.15+0点035×125简便运算?
2个回答
2022-09-17 · 知道合伙人教育行家
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原式
=65.2×10×1.25+5.45×12.5+0.035×10×12.5
=65.2×12.5+5.45×12.5+0.35×12.5
=12.5×(65.2+5.45+0.35)
=12.5×71
=887.5
=65.2×10×1.25+5.45×12.5+0.035×10×12.5
=65.2×12.5+5.45×12.5+0.35×12.5
=12.5×(65.2+5.45+0.35)
=12.5×71
=887.5
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