7.2×8.12+0.72×8.8简便方法?
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7.2×8.12+0.72×8.8
=7.2×8.12+7.2×0.88
=7.2×(8.12+0.88)
=7.2×9
=64.8
=7.2×8.12+7.2×0.88
=7.2×(8.12+0.88)
=7.2×9
=64.8
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7.2x8.12+0.72x8.8
=0.72x81.2+0.72x8.8
=0.72x(81.2+8.8)
=0.72x90
=64.8
=0.72x81.2+0.72x8.8
=0.72x(81.2+8.8)
=0.72x90
=64.8
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展开全部
7.2x8.12+0.72×8.8
=0.72x81.2+0.72x8.8
=0.72x(81.2+8.8)
=0.72×90
=64.8
=0.72x81.2+0.72x8.8
=0.72x(81.2+8.8)
=0.72×90
=64.8
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7.2ⅹ8.12+0.72ⅹ8.8
=7.2ⅹ8.12+7.2ⅹ0.88
=7.2ⅹ(8.12+0.88)
=7.2x9
=64.8
=7.2ⅹ8.12+7.2ⅹ0.88
=7.2ⅹ(8.12+0.88)
=7.2x9
=64.8
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7.2X8.12+0.72X8.8
=7.2X8.12+7.2X0.88
=7.2X(8.12+0.88)
=7.2X9
=64.8
=7.2X8.12+7.2X0.88
=7.2X(8.12+0.88)
=7.2X9
=64.8
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