A decimal is a number that has a whole part, a decimal point, and a fractional part.
You can use a place value chart to see the value of each digit in a decimal number.
The digit 2 in the tens place has a value of 20.
The digit 5 in the ones place has a value of 5.
The digit 8 in the tenths place has a value of 8 tenths.
You can write this as 0.8 or .
The farther left of the decimal point you go, the bigger the values get. The farther right, the smaller the values get.
Here's another example. Look at the number 3.529 in the place value chart.
The digit 3 in the ones place has a value of 3.
The digit 5 in the tenths place has a value of 0.5, or .
The digit 2 in the hundredths place has a value of 0.02, or .
The digit 9 in the thousandths place has a value of 0.009, or .
