把小数化成分数：0.2= 0.5= 0.8= 0.4= 0.375= 0.3= 0.75= 10.01= 0.6= 1.02= 0.25= 1.75= 1.625= 2.025=
0.2=1/5
0.5=1/2
0.8=4/5
0.4=2/5
0.375= 3/8
0.3=3/10
0.75=3/4
10.01=10 又 1/100
0.6=3/5
1.02= 6/5
0.25= 1/4
1.75= 7/4
1.625= 13/8
2.025= 81/40
0.2=1/5
0.5=1/2
0.8=4/5
0.4=2/5
0.375= 3/8
0.3=3/10
0.75=3/4
10.01=10 又 1/100
0.6=3/5
1.02= 6/5
0.25= 1/4
1.75= 7/4
1.625= 13/8
2.025= 81/40
