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

Three digit addition word problems


2m read
·Nov 11, 2024

We're told the table gives the amounts of materials that are recycled. So we have the different materials here, and then it gives the various amounts. How many kilograms of paper and aluminum did Aya recycle? So pause this video and see if you can figure this out.

Okay, so we were thinking about paper and aluminum. So paper is right over here; she recycled 277 kilograms of paper, and aluminum is right over here; she recycled 134 kilograms of aluminum. We want the combination or the sum of paper and aluminum. So, it's going to be 277 kilograms plus 134 kilograms.

So we really need to figure out what 277 plus 134 is. In multiple videos, we have talked about how there's many different ways of approaching this. We could say, well, let's just break up the 134. We could start at—actually, let me do this on a number line; that sometimes is a fun thing to do.

So if we were to just say this is our number line, and we're going to start at 277, right over there. So first, we could add a 100 because we have 100 right over there. So let's do that: if we add 100, where does it get us?

Well, if we add 100 here, we get to 377. So 300, and I'll just write 77. Then we could add 3 tens or 30. So then we're going to add 30. So let's add 30: what does that get us?

So this is interesting. If you add 30 to 370, you would get to 400, and then we have another 7 there. So that gets us to 407. So then we get to 407, and once again, this is just one way to try to think about it.

And then, last but not least, we could add the four. So then you say, we're there right now, and then we add plus four, and seven plus four is eleven. So four hundred and seven plus four is four hundred and eleven.

So how many kilograms of paper and aluminum did I recycle? It would be 411 kilograms. Kilo kilograms, and we're done.

More Articles

View All
Graphs of rational functions: vertical asymptotes | High School Math | Khan Academy
[Voiceover] We’re told, let f of x equal g of x over x squared minus x minus six, where g of x is a polynomial. Which of the following is a possible graph of y equals f of x? And they give us four choices. The fourth choice is off right over here. And l…
WARNING: The Biggest Wealth Transfer in History Is Coming
What’s up guys, it’s Graham here! So, throughout the last year, we’ve all seen the Great Resignation, where the number of workers who quit their jobs broke an all-time U.S. record. The Great Reset claimed that by 2030, you’ll own nothing and be happy. And…
Intensifiers and adverbs of degree | The parts of speech | Grammar | Khan Academy
Hey Grim, marians! So we’ve already talked about the idea of the comparative modifiers, right? So you know the difference between saying something is cute and then saying that something is cuter than that thing. And then looking at, like, I don’t know, le…
Stick 'Em! | Wicked Tuna: Outer Banks
Something feels good. I’m warmer, not was yesterday. I’m gonna say the same thing: bottom line, time’s running out, and we need more fish, always more fish. We’ve got to support my family. I got to pay my crew. I have to maintain my boat, and I have to tr…
Confidence interval for a mean with paired data | AP Statistics | Khan Academy
A group of friends wondered how much faster they could snap their fingers on one hand versus the other hand. Very important question in life! Each person snapped their fingers with their dominant hand for 10 seconds and their non-dominant hand for 10 seco…
Intro to articles | The parts of speech | Grammar | Khan Academy
Garans, I would like to tell you a Tale of Two Elephants in order to get at the idea of this thing called the article, and we’ll explain what that is after I tell you about the elephant and an elephant. Now, articles are words like a, or an, or the. Arti…