0.32×4.5＋0.45×6.8＋4.5简便运算

网友回答

0.32×4.5＋0.45×6.8＋4.5
=0.32×4.5＋4.5×0.68＋4.5
=4.5×（0.32+0.68+1）
=4.5×2
=9======以下答案可供参考======
供参考答案1:
0.32×4.5＋0.45×6.8＋4.5
=0.32×4.5＋4.5×0.68＋4.5
=(0.32+0.68+1)×4.5
=2×4.5
=9供参考答案2:
0.32*4.5+0.45*6.8+4.5
=0.45*（3.2+6.8+10）
=0.45*20
=9供参考答案3:
原式=0.32*4.5+4.5*0.68+4.5*1 =4.5*(0.32+0.68+1) =4.5*2 =9