52x27+47+27+27的简便运算?
3个回答
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解:52x27+47+27+27
=52x27+27+27+27+20
=27x(52+1+1+1)+20
=27x55+20
=27x11x5+20
=297x5+20
=5x(297+4)
=5x301
=1505
=52x27+27+27+27+20
=27x(52+1+1+1)+20
=27x55+20
=27x11x5+20
=297x5+20
=5x(297+4)
=5x301
=1505
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原式=50x27+2x27+47+27+27
=50x20+50x7+54+47+54
=1000+350+108+47
=1000+350+155
=1000+505
=1505
=50x20+50x7+54+47+54
=1000+350+108+47
=1000+350+155
=1000+505
=1505
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52×27+47+27+27
=(50+2)×27+27×3+20
=1350+54+81+20
=1505
=(50+2)×27+27×3+20
=1350+54+81+20
=1505
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