Question

Write the following numbers in their usual form:

$7\times {10}^8+6\times {10}^5+8\times {10}^2+9\times {10}^1+4\times {10}^0$

Answer 1

Writing the ususal form a number from expanded form:

Given number: $7\times {10}^8+6\times {10}^5+8\times {10}^2+9\times {10}^1+4\times {10}^0$

We know that, for converting number in usual form we have to multiply and just add them.

Therefore,

$\begin{array}{rcl}7\times {10}^8+6\times {10}^5+8\times {10}^2+9\times {10}^1+4\times {10}^0& =& 7\times 10,00,00,000+6\times 1,00,000+8\times 100+9\times 10+4\times 1\\ & =& 70,00,00,000+6,00,000+800+90+4\\ & =& 70,06,00,894\end{array}$

Hence, $7\times {10}^8+6\times {10}^5+8\times {10}^2+9\times {10}^1+4\times {10}^0=$$70,06,00,894$