5.3×0.27+0.53×7.3怎么简便运算？
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5.3×0.27+0.53×7.3
=0.53×10×0.27+0.53×7.3
=0.53×2.7+0.53×7.3
=0.53×(2.7+7.3)
=0.53×10
=5.3
=0.53×10×0.27+0.53×7.3
=0.53×2.7+0.53×7.3
=0.53×(2.7+7.3)
=0.53×10
=5.3
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