For example, 34 has 3 tens and 4 units, or we could say 34 has 3 tens and 4 ones. Write 18 out with place value labels. To multiply 18 by 100, move each digit two places to the left. Image caption ...

all of the other digits would have the wrong value as the number would become 578. We use the zero in the units column to keep all of the other digits in the correct place. The importance of the ...