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.

Iceland Is Growing New Forests for the First Time in 1,000 Years | Short Film Showcase

Comparing exponent expressions

View All

Under the Dark Skies | National Geographic

More than 130 years ago, before the advent of streetlights, we had the opportunity from the millennia before that to experience a starry night sky. It invited us inspiration and awe. [Music] When you are out under the night sky in the dark, next to your f…

Influence of political events on ideology | AP US Government & Politics | Khan Academy

In discussing political socialization, we’ve talked a lot about factors that go into how people develop their opinions on government and politics. Your family, your friends, your demographic characteristics like your race or gender, they all contribute to…

Limitations of GDP | Economic indicators and the business cycle | AP Macroeconomics | Khan Academy

In other videos, we have already talked about the idea of GDP in some depth—gross domestic product, a measure of the aggregate goods and services produced in a country in a year. But what we’re going to discuss in this video is how good a measure GDP is, …

Alaska Twins Live Off the Land 150 Miles From the Nearest Store | National Geographic

This is a very physically demanding way of life. There’s been times where I’ve been skiing for eight or ten hours through deep snow and stopping to maintain traps. I’m really tired and I’m hot and I’m sweaty, and I know that I’m just one sprained ankle aw…

Interactions within and among species | High school biology | Khan Academy

So let’s imagine that we are in the ocean, and we’re going to think a little bit about fish. We know that organisms usually are not just by themselves; there are other organisms around. There might be other members of their species around, and there are v…

Why Most Investors Lose Money.

Here’s some behind the scenes action! This is generally what my set, my beautiful set, looks like. Look at that silver play button too! By the way, close up there we are, pretty cool. Totally normal for my, uh, my screen to be on the Tesla design studio; …

Three digit addition word problems

More Articles