Percentages With Base Ten Blocks

Get some practice with base ten blocks and Percentages are SUPER EASY:

Base ten blocks make percentages SUPER EASY to understand. After you watch the videos on the next page some of the problems you may have had with figuring out questions like "27 is what percent of 90?" Or "18 is 30% of what number?" may disappear forever. And you will see why just having that red block made it fast and easy for Dboyz to SEE what they were doing instead of memorizing rules about when to multiply or divide.

Looks like magic but it's not, it's just math made easy, simple and fun: Child's Play.

Here is a short vid telling you what's in store for you after you hit


Get yourself a password and you too could be teaching your eight year old (or even your 5 year old, hard to believe I know) to do percentages in their heads. Problems like 18 is 60% of what Number? Are now "no problem..."

The days of the $24.00 annual password are long gone.  But $49.95 is a heck of deal, some people would say a STEAL, when you consider all the pages you get with the "sitewide" password. The trig page alone is worth $49.95. EASILY. Percentages concepts are easy and fun to master and as you can see it won't take you long to do it once you have the right tools and this method.


Go Home.

"Baseball is ninety percent mental and the other half is physical." ~ Yogi Berra

“Mathematics is made of 50 percent formulas, 50 percent proofs, and 50 percent imagination.” ~ Anon

“A recent survey or North American males found 42% were overweight, 34% were critically obese and 8% ate the survey.” ~ Banksey

“There are three types of lies -- lies, damn lies, and statistics.” ~ Benjamin Disraeli

Note: from time to time the passwords change. Simply e-mail me for a new one or a new passport as the case may be. Annual passes are good for one year, lifetime passes are good for as long as the site remains up, (site has been up for eight years now).  All single page passwords have lifetime renewal.

Note: Most Mortensen Product Ordering Buttons Have Been Removed Due To Shipping/Inventory Issues. Contact for ordering information and product availability.

NEW! Series A Manuals Online.  Plus a plethora of PDFs.  

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Get a PASSPORT! The "SITEWIDE" Password gets you in almost everywhere BUT the parent teacher training and 3 other pages. PASSWORD INFO ← Click to find out.

Already have one but it doesn't work anymore? Hit the Contacts tab and email me at gmail for the new one.

Sitewide Password Has Changed as of 14FEB2017.
Training Password Has Changed as of 14FEB2017.
EZPZ & Trig to 8 year olds passwords have changed as of 14FEB2017.

Lifetime Passwords on sale here.

One Time Pay
People are shockedand amazed when they see how much they get for a password.
Annual Options.

Most bang for your buck is a Sitewide or AP2 (Sitewide plus Teacher Training Anual Pass 2 Passwords).
Remember these are only good for 1 year.