(-270)*1/4+0.25*21.5+(-8 1/2)*(-25%)
(-270)*1/4+0.25*21.5+(-8 1/2)*(-25%)
(270)*4/1+0.25*21.5+(-8又2/1)*(-25%) 简便方法计算
(-270)乘4分之1+0.25乘21.5+(-8又2分之1)乘(-百分之25)
[-270]乘以4分之1+0.25乘以21.5+[-8又2分之1]乘以[-百分之25]=
(-270)乘四分之一+0.25乘21.5+(-8又2分之1)乘(-25%)用简便计算
(负270)乘四分之一+0.25乘21.5+(负8又2分之1)乘(-25%)
(-270)*0.25+0.25*21.5+8.5*(-25%)=多少
(-19)*91+91*(-81),2.(-36)*200又18分之7,3.(-270)*4分之1+0.25*21.5+
(-270)*0.25+0.25*21.5+(-8.5)*(-0.25)=?
(-270)*0.25+0.25*21.5+(-8.5)*(-0.25)
1/4×0.75+0.25×3/8+25%×1/8
0.75:8分之1= 4:0.25= 1.2:2又4分之1= 4分之3= 0.25:25= 9分之8:2=