3.012.99 9.449.46 3.5673.576 15.6015 10.999 10.1010.1
0.5,0.501,0.510,0.511
4.56 5.65 4.585 4.506
0.8 = 3.0700= 13=
①5.1,15.01,5.01,5.00 ②1.81千克,1千克81克,1086克,2千克
5.40= 15.050=
2.700= 10.800=
3.012.99 9.449.46 3.5673.576 15.6015.6
10.999 10.1010.1