Number Sense Blog

Mathnasium #MathTricks: Half of Odd Numbers

Oct 8, 2021

Recall that half means “2 parts the same,” “two equal parts.”   Half of 6 circles is 3 because we cut the whole into “2 parts the same” and take one part.   To find half of 7, we bring in one more circle and cut our new whole into “2 p...

Mathnasium #MathTricks: Half of Even Numbers

Oct 6, 2021

The word half should bring to mind the image of two equal parts: “2 parts the same.”   To find half of any amount, cut the whole into “2 parts the same” and take either one. To find half of 6, we cut the whole of 6 circles into “2 parts t...

Mathnasium #MathTricks: For Each Hundred (Advanced)

Oct 4, 2021

Do you remember our secret from our first video? Percent means “for each hundred”. If we want to find 12% of 250, we need to find “12 for each hundred“. In this case, we have two hundreds and half of one hundred. So, we count, 12 ...

Goodbye Summer, Hello Fall!

Sep 22, 2021

  Back-to-school season is upon us, and with it comes the end of summer. To make it official, today we are celebrating the Fall Equinox! Also known as the Autumn Equinox, September 22, 2021, marks the First Day of Fall. But what does this me...

Mathnasium #MathTricks: For Each Hundred (Basic)

Sep 17, 2021

Let us show you a secret: percent means something.   Per means for each, and cent means hundred.   If we want to find 5% of 300, we need to find “5 for each hundred”. So, we count, 5 for the first hundred, 5 for the second hundred, ...

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