8.45*3/4+2.55*0.75-3/4 简算

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8.45*3/4+2.55*0.75-3/4 简算

8.45*3/4+2.55*0.75-3/4 简算
8.45*3/4+2.55*0.75-3/4 简算

8.45*3/4+2.55*0.75-3/4 简算
8.45*3/4+2.55*0.75-3/4
=8.45*0.75+2.55*0.75-1*0.75
=0.75*(8.45+2.55-1)
=0.75*10
=7.5

8.45*3/4+2.55*0.75-3/4
=3/4*(8.45+2.55-1)
=3/4*10
=30/4
=15/2
=7.5

(8.45-1)*3/4+2.55*0.75
=7.45*3/4+2.55*3/4
=10*3/4
=7.5

0.75=3/4
原式=(8.45+2.55-1)*0.75=7.5

8.45*3/4+2.55*0.75-3/4
=(8.45+2.55-1)*4/3
=10*4/3
=7.5
提示：把0.75看作4/3，再看作是1

8.45*3/4+2.55*0.75-3/4 简算 0.75*4+0.75*5+3/4= 3.61*0.75+0.61*3/4+(-0.2)*0.75 0.75*8/9/3/4 4分之3除以0.75 简便算法 64.3*0.75+34.7*4分之3+0.75 7.5*3/4+0.75*1/2-0.75简便算 25×0.75×(-4)×(-3分之4) 5/9*0.75+3/4*4/9 4分之3×96+3×4分之3+0.75 计算 3/8+0.75+0.625+1/4简算 0.75*65+3/4*34+75% 简算 4分之3减0.75等于多少 12.85/0.75+2.15*4/3怎么转化? 99*0.75+4/3怎么简便? 42*75%+3/4*59-0.75 3/4和0.75是倒数吗? 0.75+（-2又3/4）