yego.me
yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Multiplying 3-digit by 2-digit numbers | Grade 5 (TX TEKS) | Khan Academy

2m read
·Nov 10, 2024

Let's get a little bit of practice multiplying numbers. So, what is 365 times 84? I encourage you to pause this video; hopefully, you have some scratch paper around, and try to calculate what this is.

All right, now let's do this together. What I like to do is, let me first write 365, and then let me write 84 right under that. But make sure that I line up the place values. So I put the eight in the tens place right under that six, and the four in the ones place right under that five.

Now I am ready to multiply. The first thing I'm going to do is I'm going to multiply 365 by 4. So, 4 times 5 is 20; I'll put the zero in the ones place, and I'll regroup that two because it's really 2 tens. So, 4 times 6 is 24 plus that two; we're really talking about 24 tens. So, plus another two tens is going to be 26 tens. I'll put six tens right over here, and then I'll regroup the two up here.

Now I have 4 times 3; it's really 4 times 300. But 4 times 3 is 12 plus those two that I just regrouped is 14. So, let me put the 14 hundreds here. Now, let me worry about this eight. Well, this eight is in the tens place; it's really 80. So, let me just put a zero here.

I start in the tens place, and let me get rid of these characters right over here so I don't confuse myself. So, 8 times 5 is 40; I'll put the zero right over here and regroup the four. 8 times 6 is 48, and then I add that four; it's going to get me to 52. Then, 8 times 3 is 24 plus 5 is going to be 29.

Now I can add everything together: 0 plus 0 is 0; 6 plus 0 is 6; 4 plus 2 is 6; 1 plus 9 is 10; put the zero here and regroup the one. 1 plus 2 is 3, and I'm done. I got 3,660.

Calculating the equation of a regression line | AP Statistics | Khan Academy
Bridge of Terror | Wicked Tuna: Outer Banks

More Articles

View All
7 Stoic Principles for Inner Peace (In Times of Uncertainty)
In times of great uncertainty, the ability to keep calm isn’t an unnecessary luxury. The ancient Stoics didn’t shy away from adversity but, instead, managed to endure while continuing their pathways of virtue. We only have to peek into the memoirs of anci…
American Empire
The United States is, shockingly, a bunch of states that are united. It was just 13 to start with, but as time marched on, the border marked west, bringing us to today and the 48 contiguous states plus Alaska and Hawaii. They’re usually drawn in these lit…
Root mean square deviation (RMSD)
So we are interested in studying the relationship between the amount that folks study for a test and their score on a test, where the score is between zero and six. So what we’re going to do is go look at the people who took the tests. We’re going to plot…
What Basic Game Theory Teaches Us About Startups
They never get the lessons in little dabs along the way. Like, you know, as kids, we’re used to getting these little lessons along the way. For these zero-sum games, often the lesson just comes fast and hard at the end. It’s like, “Oh!” This is Michael Se…
Locating y-intercepts from graphs | Grade 8 (TX) | Khan Academy
All right, let’s get some practice identifying Y intercepts. Just as a hint, the Y intercept is where a line intersects the Y axis. So pause this video and think about what is the Y intercept of this blue line. All right, so where is this line intersecti…
The Poor Man's Rolex? | Kevin & Teddy Baldassarre Tudor Watches
It’s a bit of a funky look. It is. Well, you have to hand it to Tudor; they’ve really, really focused on great dials, great value. If there was ever a brand that could encroach on a Rolex, it would be Tudor. Absolutely, it’s its own standalone brand. This…