Common Core Math Vocabulary

Place value - Definition and Meaning

What is place value?

Place Value Definition: It is the value of the digit with reference to its position in the number. For example, 238 has 2 hundred, 3 tens and 8 ones.

Place Value

 

Place value using base-ten blocks

Place Value Using Base-10 Blocks

 

Expanding place value

Each place has a value that is 10 times the value of the place on its right.

Expanding Place Value

Using the chart, the number 238 can be written in expanded form as:

Place Value Example

 

Decimal place value

Decimal numbers are fractions or mixed numbers with denominators which are powers of 10. In a decimal number, the place right to the ones place would have a value which is  (1/10th) of ones is known as tenths. Similarly, moving towards the right, the value decreases by a factor of 1/10.

Decimal Place Value

Using the chart, the number 7.341 can be written in expanded form as:

Decimal Place Value Example

 

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