Multiplying by 2 digits by to digits
10 x 40
400
0.8 x 0.3
0.24
11 x 23
200
1/ 100
0.01
0.8
80/100
23 x 40
920
0.23 x 0.80
0.184
63 x 73
4200
0.1
0.20
20/100
50 x 67
3350
0.53 x 0.53
0.2809
121 x 197
22800
49/100
0.49
0.97
97/100
49 x 97
4753
0.98 x 0.49
0.4802
450 x 67
27000
56/100
0.56
0.110
110/1000
97 x 99
9603
0.887 x 0.948
0.840876
1072 x 12
11000
129/1000
0.128
0.720
720/1000