3.56×5.2+35.2×0.3+18×0.356简便方法怎麼做
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3.56×5.2+35.6×0.3+18×0.356
=35.6×0.52+35.6×0.3+0.18×35.6
=35.6×(0.52+0.3+0.18)
=35.6×1
=35.6
=35.6×0.52+35.6×0.3+0.18×35.6
=35.6×(0.52+0.3+0.18)
=35.6×1
=35.6
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