Do you remember how to use models to represent place value?
Use the least amount of blocks possible to make the number $530$530.
Another word that we can use to describe the ones place is 'units'.
By remembering that each digit in our number is ten times larger than the place to its right, we can multiply by $10$10.
Find the value of $3\times10$3×10.
When we multiply by $10$10, our number becomes ten times bigger, so the digit moves to the next greatest place, by moving left.