Number Sense Blog



Mathnasium #MathTricks: Number Sense (Subtraction Part 2)

Dec 8, 2021

Here is a number sense trick to subtract without borrowing. Let’s say we want to subtract 54 from 900. Since the digits in the ones and tens places of 900 are both less than the same digits in 54, we need to borrow to find the difference. Wi...



December 2021 Math Activity: #NationalCookieDay

Dec 4, 2021

  Today is #NationalCookieDay and what better way to enjoy math than to incorporate it into a fun activity like baking cookies? Download our Snickerdoodle Baking Activity and Key, and share your cookie creations on social media! Be sure to tag ...



Great Gifts for Math Lovers 2021

Dec 1, 2021

  The holiday season is upon us, with gift-giving opportunities around every corner! Our annual Holiday Gift Guide can help you find the perfect gift for your favourite math-y people. From books to home-décor and everything in-between, you can’...



Ask Education: Getting into the Geometry Mindset

Nov 17, 2021

  Our expert team of math educators and enthusiasts has spent over 40 years developing and refining the most powerful teaching methods and materials into our comprehensive, industry-leading Mathnasium Method™. These “Ask Education” featu...



Mathnasium #MathTricks: Divisibility (General Rule for 11s)

Nov 10, 2021

To test if a number is divisible by 11, follow the general rule: the difference of the sum of alternating digits can be divided by 11.   To determine if the number 2,728 is divisible by 11, find the difference of the sum of alternating digit...


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