Question

Which of the following is the expanded form of 2831.

• A. $2\times {10}^3+8\times {10}^2+3\times {10}^2+1\times {10}^1$
• B. $2\times {10}^3+8\times {10}^2+3\times {10}^1+1\times {10}^0$
  
• C. $2\times {10}^3+3\times {10}^2+8\times {10}^2+1\times {10}^1$
• D. $2\times {10}^3+3\times {10}^2+8\times 10+1\times {10}^0$

Answer 1

The correct option is B $2\times {10}^3+8\times {10}^2+3\times {10}^1+1\times {10}^0$


2831 can be written as$2\times 1000+8\times 100+3\times 10+1\times 1$
$\Rightarrow$$2\times {10}^3+8\times {10}^2+3\times {10}^1+1\times {10}^0$