The 9 is in the tenths column. Remember it's Hundreds, Tens, Ones, decimal, Tenths, Hundredths, Thousandths.
The digit in the tenth column of 34.5 is 5 (5 tenths)
The digit in the tenths column is the digit 8.
It is 0.9 which is the same as 9/10
When rounding to a place value column, you use the digit in the column to the right of the column to which you are rounding,To round to the nearest tenth, you use the digit in the column which is to the right of the tenths column, the hundredths digit.In 36.842:the tenths digit (the first one after the decimal point) is 8; andthe hundredths digit (the one to the right of the tenths digit) is 4Thus you use the 4 to the right of the 8 to decide whether to round the 8 up or down.