1) 7 1/2 = 7 5/10 = 75/10

9 2/5 = 9 4/10 = 94/10

3 4/5 = 3 8/10 = 38/10

2) 6 3/4 = 6 75/100 = 675/100

5 9/20 = 5 45/100 = 545/100

8 6/25 = 8 24/100 = 824/100

1 3/50 = 1 6/100 = 106/100

3) 2 5/8 = 2 625/1000 = 2625/1000

3 7/125 = 3 56/1000 = 3056/1000

6 11/125 = 6 88/1000 = 6088/1000

4 123/500 = 4 246/1000 = 4246/1000

7*5=7

9*2=9

3*2=3

6*25=6

5*5=5

8*4=8

2*125=2

3*8=3

6*8=6