Question

3*10³+2*10²+5*10¹

Answer 1

\(3\times10^3+2\times10^2+5\times10^1\\ =3\times1000+2\times100+5\times10\\ =3000+200+50\\ =3250\)

Answer 2

`@` `\text {Ans}`

`\downarrow`

\(3\cdot10^3+2\cdot10^2+5\cdot10^1\)

\(=10\cdot\left(3\cdot10^2+2\cdot10+5\right)\)

\(=10\cdot\left[10\left(3\cdot10+2\right)+5\right]\)

\(=10\cdot\left[10\left(30+2\right)+5\right]\)

\(=10\cdot\left(320+5\right)\)
\(=10\cdot325\)

\(=3250\)