Follow this link to find out more about subtraction.

Now follow this link to complete some problems. Record them in your maths books.

This weeks Homework

Watch the program from BTN, take notes and then write a report using the information you find.
If you do not have access to the Internet talk to me and I will arrange a hard copy of information for you to use.
You can use any method you like to show the information you find.
Your report is due on Friday
Extra information can be found at: