零点25乘19加4分之3乘27是多少简便方法
把0.25*19+1/4*(3*27)
=0.25*19+0.25*81
=0.25*(19+81)
=0.25*100
=25
(注:1/4=0.25 )
=0.25*19+0.25*81
=0.25*(19+81)
=0.25*100
=25
(注:1/4=0.25 )
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第1个回答 2014-10-04
=0.25*(19+81)
=0.25*100
=25
第2个回答 2014-10-04
0.25×19+3/4×27
=1/4×19+3/4×27
=1/4×(19+3×27)
=1/4×(19+81)
=1/4×100
=25
=1/4×19+3/4×27
=1/4×(19+3×27)
=1/4×(19+81)
=1/4×100
=25
第3个回答 2014-10-04
即为(1/4)*19+(3/4)*(19+8)=19+6=25
第4个回答 2014-10-04
1/4*20-1+3/4+3/4*27;