0.6-4.73+4.4-0.27=（0.6+4.4）-4.73-0.27= 5-(4.73+0.27)=5-5=0
0.6-4.73+4.4-0.27的简便算式0.6-4.73+4.4-0.27=（0.6+4.4）-（4.73+0.27）=5-5=0
