The multiplication expression shown by the model is 69 * 1/100
Writing the multiplication expression shown by the model
from the question, we have the following parameters that can be used in our computation:
The model
Where, we have
Shaded region = 13 * 10 + 8
All dots = 20 * 10
When evaluated, we have
Shaded region = 138
All dots = 200
So, we have the expression to be
Expresion = 138/200
This gives
Expresion = 69/100
As a product, we have
Expresion = 69 * 1/100
Hence, the multiplication expression is 69 * 1/100