Or we can show the same thing this way:
When we write numbers with thousandths using decimals we use a decimal point and places to the right of this decimal point. The thousandth place is three places to the right of the decimal point.
.  3  8  9  
We read this number as three hundred eightynine thousandths 
Blocks  Fraction  Decimal  Notes 
1/1000 
.001 one thousandth 

2/1000 
.002 two thousandths 

37/1000 
.037 thirtyseven thousandths 
Note: three hundredths = thirty thousandths 

104/1000 
.104 one hundred four thousandths 
Note: one tenth = one hundred thousandths ( .1 = .100) 

545/1000 
.545 five hundred fortyfive thousandths 

1 1/1000 
1.001 one and one thousandth 

1 263/1000 
1.263 one and two hundred sixtythree thousandths 
The worksheets below will help practice working with decimals and place values to the right of the decimal point.