(55*4.5-45*0.3)*44.

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(55*4.5-45*0.3)*44.

(55*4.5-45*0.3)*44.4
=52*4.5*4*11.1
=52*18*11.1
=26*36*11.1
=(31^2-25)*11.1
=(961-25)*11.1
=936*11.1
=9360+936+93.6
=10389.6

(55*4.5-45*0.3)*44. 45+55+45+55 45+56+55+55 用9:15,0.3:9,1.5:45,0.15:4.5组成比例 4.5×2.5+0.25×55 4.5*36+55*3.6 2.7x - 4.5=0.3x+0.3 简便计算 45×55+55×55 55*0.3-3*0.3等于几 (x-4.5)/0.3=12 0.3X/2.8=4.5 3.1*4.5+55*0.31 简算 3.1×4.5+55×0.31 简算 3.21*55+32.1-4.5简算 55+45等于多少, 55加45等于 55*23-45*23 55*45+45*55+55*10简便如题,