7.2×8.12+0.72×8.8简便方法?
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7.2x8.12+0.72X8.8
=0.72x81.2+0.72×8.8
=0.72x(81.2+8.8)
=0.72X90
=64.8
=0.72x81.2+0.72×8.8
=0.72x(81.2+8.8)
=0.72X90
=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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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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7.2*8.12+0.72*8.8
=0.72*81.2+0.72*8.8
=0.72*(81.2+8.8)
=0.72*90
=64.8
=0.72*81.2+0.72*8.8
=0.72*(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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