Given that Billy used four colours to divide 4.20 by 4
To Determine: The model that shows this division
Solution:
It can be observed that 1 represents 100 small boxes
Dividing 4.20 by 4 would give

1.05 would be represented by small boxes

If we used colours, then each of the colours would have 105 boxes
From the above explanation, the model that shows 4.20/4 is OPTION D