7.25*1.8+27.5*0.18(简便)
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7.25*1.8+27.5*0.18(简便)7.25*1.8+27.5*0.18(简便)7.25*1.8+27.5*0.18(简便)7.25*1.8+2.75*1.8=(7.25+2.75)*1.8=
7.25*1.8+27.5*0.18(简便)
7.25*1.8+27.5*0.18(简便)
7.25*1.8+27.5*0.18(简便)
7.25*1.8+2.75*1.8
=(7.25+2.75)*1.8
=18
=72.5*0.18*27.5*0.18
=(72.5+27.5)*0.18
=100*0.18
=18
7.25*1.8+27.5*0.18
=7.25x18+2.75x1.8
=1.8x(7.25+2.75)
=1.8x10
=18
7.25*1.8+27.5*0.18(简便)
2.25×1.8+27.5×0.18简算!
用递等式计算,能简算的要写出简算过程.42÷[14-(50-39)] 7.25×1.8+27.5×0.18905×99+905
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