When we divide numbers by 100, each digit must move two places to the right.
When we look at the columns in a Th, H, T, U grid we notice that Tens are 100 times smaller than Thousands, Units are 100 times smaller than Hundreds etc...
54.6 × 10 = 0.546
Here is 54.6 in a Th, H, T, U grid.
Watch this animation to see how each digit moves two places to the right.
Remember to fill in that 0 in the units column.
So 54.6 ÷ 100 = 0.546