Place Value

Place value tells us what a digit means in a number. The same digit can mean different amounts depending on where it sits. For example, in 325, the 3 means 300 because it is in the hundreds place. Place value helps us read big numbers and do math with them.

How Place Value Works

Numbers are built from digits, which are 0 through 9. Each spot in a number has a name, like ones, tens, hundreds, and thousands. Moving a digit to the left makes it ten times bigger. So in 55, the first 5 is worth 50 and the second 5 is worth 5. The value depends on the place.

Why Place Value Matters

Place value is the base of our number system. Without it, adding and subtracting would be much harder. It lets us write huge numbers with just 10 digits. It also helps us line up numbers when we do math on paper. Understanding place value makes all other math easier to learn.

Fun Facts

• Our number system is called base ten because it uses 10 digits.
• The zero was invented to hold a place value when there is no amount.
• Ancient Babylonians used place value with base 60 instead of base 10.

Did You Know?

A single digit moved one place to the left becomes ten times larger, which is why a 1 in the tens place equals 10.