Maximum common factor of 2,4,5: 1

Least common multiple: 20

Maximum common factor of 6 and 16: 2.

Least common multiple: 48

Maximum common factor 15 and 25: 5

Least common multiple: 75

Maximum common factor of 2 1 and 63: 2 1.

Least common multiple: 63

5、0.32 & lt3/5 & lt； 5/8 & lt； 1 & lt； 2.8

P 10 1

4、0.2= 1/5 0.24=6/25 0.035=7/200 0. 125= 1/8

3/20= 1. 15 9/20=0.225 12/5=2.4 8/ 15≈0.533