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(1.7*0.8)*251.765+3.089-0.760.25*36*40*0.50.125*1.7*400.667*999+2.6671.9*13.67.25*(0.8+0.4)0.58*1.5+5.80.7519.9*1.5202*0.724.5*4.423.684-5.48-1.521.75*6.8+3.5*3.5*1.75-0.0317.52.764-(1.764+0.669)1.25*(8-0.4+0.6)
题目详情
(1.7*0.8)*25 1.765+3.089-0.76 0.25*36*40*0.5 0.125*1.7*40 0.667*999+2.667 1.9*13.6 7.25*(0.8+0.4) 0.58*1.5+5.80.75 19.9*1.5 202*0.72 4.5*4.4 23.684-5.48-1.52 1.75*6.8+3.5*3.5*1.75-0.0317.5 2.764-(1.764+0.669) 1.25*(8-0.4+0.6 )
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答案和解析
(1.7*0.8)*25 =0.8*25*1.7=34 1.765+3.089-0.76=1.765-0.76+3.089=4.094 0.25*36*40*0.5 =(0.25*40)*(36*0.5)=18 0.125*1.7*40=0.125*40*1.7=8.5 0.667*999+2.667=0.667*999+0.667+2=0.667*(999+1)+2=669 1.9*13.6=(2-0.1)*13.6=25.84 7.25*(0.8+0.4) =7.25*0.8+7.25*0.4=0.87 0.58*1.5+5.8*0.75=0.58*1.5+0.58*7.5=0.58*(1.5+7.5)=13.5 19.9*1.5=(20-0.1)*1.5=29.85 202*0.72=(200+2)*0.72=145.44 4.5*4.4 =19.8 23.684-5.48-1.52=23.684-(5.48+1.52)=16.684 这一题.麻烦题目打好.米看懂.1.25*(8-0.4+0.6 ) =1.25*8-1.25*0.4+1.25*0.6=10-0.5+0.75=10.25
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