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1.85+2.7-2.73×1.5怎么脱式计算?
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1.85+2.7-2.73×1.5
=1.85+2.7-2.73*(1+0.5)
=1.85+2.7-2.73*1-2.73*0.5
=1.85+2.7-2.73-1.365
=1.85+(2.7-2.73)-1.365
=1.85-0.03-1.365
=0.465
=1.85+2.7-2.73*(1+0.5)
=1.85+2.7-2.73*1-2.73*0.5
=1.85+2.7-2.73-1.365
=1.85+(2.7-2.73)-1.365
=1.85-0.03-1.365
=0.465
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解:1.85+2.7-2.73×1.5等于( 91/200 ),【即等于0.455】
∵已知需求出1.85+2.7-2.73×1.5等于多少
∴1.85 + 2.7 - 2.73 × 1.5
= (1×100+85)/100 + (2×10+7)/10 - (2×100+73)/100 × (1×10+5)/10
= 185/100 + 27/10 - 273/100 × 15/10
= 37/20 + 27/10 - 273/100 × 3/2
= 37/20 + 27/10 - 819/200
= 370/200 + 540/200 - 819/200
= 910/200 - 819/200
= 91/200
= 0.455
答:1.85+2.7-2.73×1.5等于91/200,【即等于0.455】
∵已知需求出1.85+2.7-2.73×1.5等于多少
∴1.85 + 2.7 - 2.73 × 1.5
= (1×100+85)/100 + (2×10+7)/10 - (2×100+73)/100 × (1×10+5)/10
= 185/100 + 27/10 - 273/100 × 15/10
= 37/20 + 27/10 - 273/100 × 3/2
= 37/20 + 27/10 - 819/200
= 370/200 + 540/200 - 819/200
= 910/200 - 819/200
= 91/200
= 0.455
答:1.85+2.7-2.73×1.5等于91/200,【即等于0.455】
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