Howie Hua

@howie_hua • 100,956 subscribers

I teach math to future elementary school teachers at Fresno State. I make math memes and explainer videos. https://t.co/ks70O6RaFv

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Videos

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$A fraction comparison strategy: Comparing to 1/2$

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Live Cam

Howie Hua

Shorts

It's Mental Math Monday! How would you mentally calculate 95% of $300?

It's Mental Math Monday! How would you mentally calculate this: 75 is 30% of _____?

It's Mental Math Monday! What goes on in your head when you're mentally calculating 12×25?

It's mental math Monday. How would you mentally calculate 48+49?

I don't mean to start any drama or anything but would you round 0.49999... to 0 or 1?

It's Mental Math Monday! Is 15.99/3.99 greater than 4, less than 4, or equal to 4? How are you thinking about it?

It's Mental Math Monday! How would you mentally calculate 135-57?

Its Mental Math Monday. How would you mentally calculate the total?

It's Mental Math Monday! Is 3.01/12.01 greater than, less than, or equal to 1/4? Please share how you would mentally do this.

It's Mental Math Monday. How would you mentally calculate 2023-1976?

It's Mental Math Monday with math teacher Quinn from Missouri! How would you mentally calculate 25×35?

For today's Mental Math Monday, how would you mentally calculate this: 60 is 40% of ___?

It's Mental Math Monday! What goes on in your head when you're mentally calculating 17+18?

It's Mental Math Monday! If 20 cookies cost $36, how would you mentally calculate the cost of 6 cookies?

It's Mental Math Monday! If a pair of pants cost $80 but you have a 20% off coupon, how would you mentally calculate the new cost?

It's Mental Math Monday! How would you mentally calculate 2.5×24?

It's Mental Math Monday! How would you mentally calculate 112-49?

It's Mental Math Monday! Let's practice division. How would you mentally calculate 468÷3?

It's Mental Math Monday! How would you mentally calculate 47+48?

Can you solve this math riddle by Eli: What number with one syllable has the highest value?

Videos

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California ran out of license plates of the form 1ABC234 so I was curious, how many license plates did we go through?

A fraction comparison strategy: Comparing to 1/2

If you are driving to your friend's house at an average speed of 40 mph and you take the same route back at an average speed of 60 mph, what was your overall speed? It is NOT 50 mph. Let's learn about the harmonic mean.

Which Pokémon encounter is more likely: Bellsprout (a 20% encounter rate) in 5 encounters or Clefairy (a 1% encounter rate) in 100 encounters?

If you repeatedly flip a coin, which sequence is more likely to appear first: HTT or TTH? Believe it or not, one is 3 times more likely to appear first!

When I was in high school, I didn't realize difference of two squares literally meant "What's the difference between these two squares?" Here's how we can visually show why x²-y²=(x-y)(x+y).

Which is greater: 2025²⁰²⁶ or 2026²⁰²⁵?

The probability of finding a Pikachu in Viridian Forest is 5% so you just need 20 encounters to ensure finding a Pikachu, right? Math doesn't work out like that. Let's do the math to find the probability of encountering at least one Pikachu in 20 encounters.

Will this answer surprise you? Or is it intuitive?

Which is greater: 50⁹⁹ or 99!

I heard University of California students have trouble with 1/2 + 1/3 so let's talk about it

My college students said they wish they were taught this way of finding the greatest common factor when they were in school

The decimal representation for 1/7s is really cool

I know this is controversial but I'm saying it anyway: 8×3 and 3×8 are saying different things.

This is a very common misconception in statistics: If 1% of a population has a disease and the tests have a 5% chance of giving a false positive, what's the probability of having the disease given that we tested positive? The answer is NOT 95%. It's actually way less.

How do we do this "new" way of dividing?

Why is 0!=1?

Do you know of this fun subtraction strategy?

Today's date, 9/25/2025, is probably the last date of our lifetime where the month, day, and year are all square numbers 😱 Next time this will happen is 1/1/2116.

If it takes Elmo 6 minutes to build a snowman and Rocco 7 minutes to build a snowman, how fast can they build a snowman if they worked together?