52.4+7.8-14.7简便运算怎么写?
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52.4+7.8-14.7
=52.4+8-0.2-14.7
=60.4-(0.2+14.7)
=60.4-14.9
=60.4-15+0.1
=45.4+0.1
=45.5
=52.4+8-0.2-14.7
=60.4-(0.2+14.7)
=60.4-14.9
=60.4-15+0.1
=45.4+0.1
=45.5
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=52.4+7.8-14.7
=61.2-14.7
=56.5
=61.2-14.7
=56.5
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展开全部
52.4+7.8-14.7
=52.4+7.6+0.2-14.7
=60+0.2-14.7
=60-15+0.2+0.3
=45.5
=52.4+7.6+0.2-14.7
=60+0.2-14.7
=60-15+0.2+0.3
=45.5
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展开全部
52.4+7.8-14.7
=52.4+7.8-(14+0.7)
=52.4+7.8-14-0.7
=52.4-14+(7.8-0.7)
=38.4+7.1
=45.5
=52.4+7.8-(14+0.7)
=52.4+7.8-14-0.7
=52.4-14+(7.8-0.7)
=38.4+7.1
=45.5
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