Practice time! Build, read, & write three-digit numbers using base-10 blocks and symbols. Practice time! Build, read, write (in standard and expanded form), and represent three-digit numbers using ...

Understand how to express the same number in different forms. Part of using base-ten numbers correctly is understanding how to express the same number in different forms. It is challenging to move ...

The Internal Revenue Service has proposed regulations allowing truncated Taxpayer Identification Numbers on the Form W-2 to help protect people’s Social Security Numbers from identity theft.

In the last 100 years, developments in physics have reaffirmed the fundamentality of mathematics to the universe — and in a subtle way, pointed toward the centrality of consciousness.