Place value is a system that groups numbers based on their size.
The position of a digit detemins it's value. When we say numbers we group them within the same house. For example 15709 has fifteen thousand, seven hundreds and nine ones.
Understanding our base 10 place value system allows us to pronance big numbers properly. It also allows us to indentify numbers before and after.
L.I. To read number larger than 999.
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