What is unit form?

Unit form is a way of representing a number by showing the place value of each digit. In unit form, each digit is written in terms of its place value, such as tens, hundreds, thousands, etc. For example, the number 3,456 in unit form would be written as 3 thousands, 4 hundreds, 5 tens, and 6 ones, or 3 x 1000 + 4 x 100 + 5 x 10 + 6 x 1. Unit form is often used in math to help students understand the concept of place value and to break down larger numbers into their component parts.