NumberNut
Number Nut: Numbers and Counting: Counting to 1,000
Follow the steps in the examples for place value to the thousands place and then practice the skills with the two interactive activities.
CK-12 Foundation
Ck 12: Elem Math: Representing Numbers in Expanded Form Ii (Grade 4)
[Free Registration/Login may be required to access all resource tools.] This learning module features an interactive, a video, and a practice quiz in which students identify the ones, tens, or hundreds digit of a value by counting the...