When we divide by 10, every figure moves one place to the right. Thousands become hundreds, hundreds become tens and tens become units.
When we divide by 100, every figure moves two places to the right. Thousands become tens, hundreds become units, and tens and units become fractions of a unit.
When we divide by 1000, every figure moves three places to the right. Thousands become units. Hundreds, tens and units become fractions of a unit.