What is the value of the underlined digit 315

If the underlined number is 3 its on the ones place and 1 is in the tens place and the 5 is in the hundreds

So if its 3 its in the hundreds place and if its 1 its in the 10 place and if its 5 its in the ones place i hope this helps your and you could always make a chart or print one that helps you.Another idea is if you have a white board ask your mom to draw a place vaule chart so that you could always reuse it