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.

Everything about Sea Turtles - Smarter Every Day 239
Stop Hiding Who You Really Are | The Philosophy of Friedrich Nietzsche

More Articles

View All
Magnitude of the equilibrium constant | Equilibrium | AP Chemistry | Khan Academy
The magnitude of the equilibrium constant tells us the relative amounts of products and reactants at equilibrium. For example, let’s look at a hypothetical reaction where gas A turns into gas B. For the first example, let’s say that gas A is represented b…
The Next Atomic Bomb Is Made of DNA #kurzgesagt #shorts
The next atomic bomb is made of DNA, and it’s as affordable as a new car. In recent years, genetic data has become more available, knowledge more widespread, and lab resources less expensive. Bioengineering had previously been restricted to well-funded la…
Time on a number line example
We’re told to look at the following number line, and this number line we actually have times on it, so you could even call it a timeline. We’re starting at one o’clock here. Then we go to 1:15, 1:30, 1:45, then 2 o’clock. It says, “What time is shown on t…
Using the distributive property when multiplying
What we’re going to do in this video is dig a little bit deeper into our understanding of multiplication. And just as an example, we’re going to use four times seven. Some of you might know what four times seven is, but even in this case, I think you migh…
It’s Here: The Reverse Housing Crash Of 2024
What’s up Graham, it’s guys here and in a weird twist of events, home prices are crashing higher. That’s right! Despite 8% mortgage rates, record low affordability, and home sales on pace for the worst year since 1993, home prices have managed to hit a br…
Rounding to the nearest 10
In this video, we’re going to be doing some rounding, which you’re probably not familiar with just yet. But you’ll see that it’s pretty straightforward, and we’re going to start by rounding to the nearest 10. So the first question is, what is rounding an…