Question

16(25+x) in standard form

Answer 1

$\begin{gathered} 16(25+x) \\ \text{Multiply by 16} \\ =400+16x \\ =(4\times10^2)+16x \end{gathered}$

Whe you need to write a number in standard form, you normally write a number between the range of 1 and 10 and then multiply it by 10 raised to the power of ___.

So 400 becomes

4 x 100

4 x 10^2