Write the following numbers in generalised form:
$39,52,106,359,628,3458,9502,7000$

The given numbers can be written in generalised form as follows:

(a) $39=(3\times 10)+(9\times 1)=(3\times {10}^1)+(9\times {10}^0)$

(b) $52=(5\times 10)+(2\times 1)=(5\times {10}^1)+(2\times {10}^0)$

(c) $106=(1\times 100)+(0\times 10)+(6\times 1)=(1\times {10}^2)+(0\times {10}^1)+(6\times {10}^0)$

(d) $359=(3\times 100)+(5\times 10)+(9\times 1)=(3\times {10}^2)+(5\times {10}^1)+(9\times {10}^0)$

(e) $628=(6\times 100)+(2\times 10)+(8\times 1)=(6\times {10}^2)+(2\times {10}^1)+(8\times {10}^0)$

(f) $3458=(3\times 1000)+(4\times 100)+(5\times 10)+(8\times 1)=(3\times {10}^3)+(4\times {10}^2)+(5\times {10}^1)+(8\times {10}^0)$

(g) $9502=(9\times 1000)+(5\times 100)+(0\times 10)+(2\times 1)=(9\times {10}^3)+(5\times {10}^2)+(0\times {10}^1)+(2\times {10}^0)$

(h) $7000=(7\times 1000)+(0\times 100)+(0\times 10)+(0\times 1)=(7\times {10}^3)+(0\times {10}^2)+(0\times {10}^1)+(0\times {10}^0)$