Respuesta :

For the stander form is:(8 times 1) add (5 times 0.1) add (1 times 0.01) add (7 times 0.001)
For the word form is: eight and five hundred seventeen thousandthes
8.517 in written form is: 

Eight and five hundred seventeen thousandth

8.517 in expanded form is:

8 + 0.5 + 0.01 + 0.007

Hope I Helped You!!! :-)

Have A Good Day!!!