How it works
Label the place value chart for the number 482,751.639. Each digit has a blank box for its place, from hundred thousands down to thousandths, with one box for the decimal point and two for the periods.
Read the full guide
Start at the decimal point
The place just left of the decimal point is the ones. Each step left is worth ten times more: tens, hundreds, thousands. Each step right of the point is a tenth as much: tenths, hundredths, thousandths.
Label the units in the place value chart
Class worksheets call the places units, because each place counts a unit of its own: ones, tens, hundreds. Three places make a period, and a comma separates one period from the next.
- Whole-number places end in s; decimal places end in ths. Tens are left of the point, tenths right of it.
Questions and answers
What are the places on a place value chart?
Going left from the decimal point: ones, tens, hundreds, thousands, ten thousands, hundred thousands. Going right from it: tenths, hundredths, thousandths.
What is a period in place value?
A group of three places. The ones period holds the hundreds, tens and ones. The thousands period holds the hundred thousands, ten thousands and thousands. Commas separate the periods.
What place is the first digit after the decimal point?
The tenths place. The second digit after the point is hundredths and the third is thousandths.
How much is each place worth compared with the next?
Ten times the place on its right and one tenth of the place on its left. Ten ones make a ten, and ten tens make a hundred.