PBS

Math Susanna Post How to Read & Write Numbers Up to 1,000

Rise and Shine is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and ...
PBS

Standard and Expanded Forms: Numbers in the Hundreds

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 ...
AOL

How To Write Numbers in Words on a Check

Writing a check correctly can be intimidating, especially if you’re out of practice — or never learned. The less you use your checkbook, the more confusing it can be — especially when it comes to ...
BBC

Introducing standard index form

How to convert from standard form to an ordinary number For example, 300 in standard form would be 3 x 10². A = 3 and n = 2 The integer power of ten is positive for numbers greater than 10 and ...
Scientific American

Surreal Numbers Are a Real Thing. Here’s How to Make Them

In the early 1970s mathematician Donald Knuth spent a sabbatical with his wife in Norway. The time was meant to be spent relaxing. Yet one night he woke up his partner in a state of agitation. He ...