This section asks you to understand place value and the names of large numbers.
Here are Narrated Powerpoints -- they've got sound. Please, if you see or hear mistakes or something you'd like changed, click on "comment" and say so :)
How do I Find the Place Value of a Digit?
What is a whole number?
Naming Small Numbers -- the homework doesn't include any problems like this. If you already know the names of numbers less than a thousand, you can skip it :)
Naming Large Numbers - one group at a time.
This show will review the names of the big groups (thousands, millions, billions and trillions) but if naming 243,001,308,000,121 seems intimidating, start here.
Naming Large Numbers -- all mixed up! Numbers up to the trillions for you to name in words and digits -- how to do it, and practice.