3.02×2.4×0.5用简便方法?
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(3+0.02)×1.2
=3.6+0.024
=3.624
=3.6+0.024
=3.624
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展开全部
3.02×2.4×0.5
=3.02×(2.4×0.5)
=3.02×1.2
=(3+0.02)×1.2
=3×1.2+0.02×1.2
=3.6+0.024
=3.624
=3.02×(2.4×0.5)
=3.02×1.2
=(3+0.02)×1.2
=3×1.2+0.02×1.2
=3.6+0.024
=3.624
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