4.32×5.43+0.457×43.2
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4.32×5.43+0.457×43.2
=4.32×0.543×10+0.457×43.2
=4.32×10×0.543+0.457×43.2
=43.2×0.543+0.457×43.2
=43.2×（0.543+0.457）
=43.2×1
=43.2
=4.32×0.543×10+0.457×43.2
=4.32×10×0.543+0.457×43.2
=43.2×0.543+0.457×43.2
=43.2×（0.543+0.457）
=43.2×1
=43.2
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