Question

What decimal is represented by this expanded form? 3 x 1,000 + 6 x 100 + 1 x 10 + 2 x 1/10 + 1 x 1/1,000

Answer 1

`\displaystyle\\3*1000+6*100+1*10+2*(1)/(10)+1* (1)/(1000)=\\\\=3000+600+10+(2)/(10)+(1)/(1000)=\\\\=3000+600+10+0.2+0.001=\\\\=3610+0.2+0.001=\boxed{\bf3610.201}`