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.

Linking function of the colon | The Colon and semicolon | Punctuation | Khan Academy

Teacher Tim Vandenberg shares how mastery learning worked for his class | Homeroom with Sal

View All

Abstinence-Only Sex Ed | Original Sin: Sex

By the 1990s in the U.S., most of the advances to public sex education made since the 50s are political roadkill. Late 90s, there is this increase in abstinence-only sex education. In 1993, the Southern Baptists asked American teens to put a ring on it a…

Decomposing angles | Math | 4th grade | Khan Academy

What is the measure of angle EAC? So, we have this symbol here which means angle and then these three letters: E, A, C. Now, to measure angle EAC, we need to first find angle EAC down here on our picture. The way we can do that is use these three letter…

This Amazing Dog Helps to Save Endangered Parrots | Short Film Showcase

This is Ajax, and I’ve trained him to help me find kea nests. He’s the only kea dog in the country, and I guess that means the world. People are really shocked when you tell them that there are less kea than there are kiwis. I’ve been training Ajax since …

The Best Ways The Rich Build a Recession-Proof Investment Portfolio

You know, Alexir, the rich come out almost unscathed during recessions. In fact, many come out in better shape than when the recession started. The world can shout about bailouts as loud as they want, but if you look deeper into it, you’ll see their growt…

Coffee Farmers Hopeful For Their Dying Crops | Short Film Showcase

Coffee is the second most traded commodity after oil. Socially and ecologically, it still represents a big chunk of Guatemala’s economy, Guatemala’s social networks, and biodiversity sustainability as well. Recent outbreaks of pests and infestations linke…

Limits at infinity of quotients with square roots (even power) | AP Calculus AB | Khan Academy

Let’s see if we can find the limit as x approaches negative infinity of the square root of four x to the fourth minus x over two x squared plus three. And like always, pause this video and see if you can figure it out. Well, whenever we’re trying to find…

Three digit addition word problems

More Articles