Howie Hua

@howie_hua • 100,673 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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$This fraction comparison strategy is underrated$

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$Did you know we can divide across fractions? 😱$

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Live Cam

Howie Hua

Shorts

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

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 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! 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 48+49?

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

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! How would you mentally calculate 2 1/2 × 4 1/2?

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

It's Mental Math Monday! How would you mentally calculate 2×2×3×4×5×5?

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

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 112-49?

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

Videos

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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!

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

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).

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.

Which is greater: 2025²⁰²⁶ or 2026²⁰²⁵?

The decimal representation for 1/7s is really cool

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.

Will this answer surprise you? Or is it intuitive?

This fraction comparison strategy is underrated

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

If chicken nuggets only came in boxes of 5 and 18, what is the largest order not possible? Let's learn about the Chicken McNugget theorem.

I have two shuffled 52 card decks. If I reveal one card from each deck at the same time and I exhaust the decks, what's the probability of flipping the same exact card at least once?

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?

Fun math trick: Here's how we can mentally calculate cube roots

Why is 0!=1?

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.

One of the coolest math facts that I know is that the only circle that fits perfectly in a 3-4-5 right triangle has an area of pi. Here's how we can prove this.

Did you know you can subtract left to right?

Did you know we can divide across fractions? 😱

Can we all share a fun math fact we will never use in our life but we still think is cool?