cumulative sum in matrix

How do i generate a 5x10 matrix such as:

       Z1       Z2       Z3   ...  Z4 Z5 Z6 Z7 Z8 Z9 Z10 ( each Z is a random number)
       Z1+Z1'   Z2+Z2'   Z3+Z3'      ( cumulative sum of previous Z value with Z', Z' is a new random number)      
     .
     .
    Z1+Z1'+Z1''+Z1'''+Z1''''

Answer 1

[Stephen23]

cumsum(rand(5,10),1)