Place Value of Digits

Mathematical calculations such as addition, subtraction, multiplication and division can be easier to do and understand if you keep numbers in columns as well as rows. When doing calculations it is important to keep your numbers in their right columns. These columns are not always drawn of course

• Single digit numbers like 5 go in the units column.
• With double digit numbers like 10, have the 1 in and the tens column the and the 0 in the units column.
• With 100, the 1 goes in the Hundreds Column. This shows how digits have their place value.
  

Here are some examples of how numbers can be expanded to show the place value of their digits