Multiplication of two numbers is easy, right? At primary school we learn how to do long multiplication like this: Methods similar to this go back thousands of years, at least to the ancient Sumerians ...

Nikhil Nandan is not your usual 10-year-old. He does not play with a playstation or remote controlled toy cars. His toys are numbers. In a matter of minutes, he can multiply three digit numbers, give ...

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