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...

*Note that the U means Units, which is another word for Ones.

e.g. Work out:

54.6 × 10 = 0.546 

Here is 54.6 in a Th, H, T, U grid.

Answer:

Each digit moves two places to the right.

Remember to fill in that 0 in the units column.

So  54.6 ÷ 100 = 0.546 

Want to understand this further and learn how this links to other topics in maths?