9.9乘5.6加0.56等于几

分类: 作业答案 • 2021-12-24 15:53:59

问题描述：

9.9乘5.6加0.56等于几

答

9.9*5.6+0.56
=9.9*0.56*10+0.56
=99*0.56+0.56
=0.56*(99+1)
=0.56*100
=564.4*5.5-44*0.33-0.44*22