Counting by tens | Counting | Early Math | Khan Academy

less than 1m read

·Nov 11, 2024

So we are told, let's count by tens, and we go 10, 20, blank, 40, 50, 60, 70, 80, 90, 000. What number did we miss? Pause the video. What number did we miss right over here? Well, if we're counting by tens, we would go 10, 20, 30, 40, 50, 60, 70, 80, 90, 100. So we're missing 30.

So which choice right over here has 30? Well, if we scroll down a little bit, we see right there that is our choice. Let's do another example. So here we are asked, which 10 frames show 20? A 10 frame is just a fancy word for one of these blocks of these frames that have 10 objects in it. You can see it right over here: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

So which of these 10 frames show 20? Well, 20 is two groups of 10. So this is 10, and then 20. So that's 20 right over there. Choice B is 10, 20, 30, 40. Choice C is 10, 20, 30. So we could feel good about choice A here.

We're told drag the 10 frames into the box to make 40. So let's see here: this is 10 right over there, then we get another 10 gets us to 20, then another 10 gets us to 30, and then finally another 10 gets us to 40. 10, 20, 30, 40. We're done.

The vowel-shift irregular verb | The parts of speech | Grammar | Khan Academy

Crew vs. Cold - Behind the Scenes | Life Below Zero

View All

Feudal system during the Middle Ages | World History | Khan Academy

Talk about in other videos. The Middle Ages refers to that roughly 1,000 year period of time in Europe, from the end of the Western Roman Empire in 476 until we get to about a thousand years later, with the emergence of the Renaissance and the Age of Expl…

Developing an American identity, 1800-1848 | US history | Khan Academy

In this video, I want to take a look back at the period from 1800 to 1848, kind of from a bird’s eye view. This is a huge time in American history. In 1800, the United States was just a fledgling nation, less than 20 years out from winning its independenc…

My Thoughts On Paying Higher Taxes | Kamala Harris Tax Plan

So first of all, let me just say this: initially I was not planning to make a video on this topic because, one, I really dislike involving politics on the channel; two, I don’t want anything I say to be taken out of context; and three, I just don’t know h…

LearnStorm Growth Mindset: Animation Director on setting goals

My name is Lisa Labraccio. I’m 32 years old. I am an animation director at Ted Ed. I’ve always wanted to do animation, so it just, at whatever point in high school, when they tell you to start looking at colleges and what you might, where you might want t…

How To Think Like A High Achiever

There are two types of people in this world: those who get it and those who don’t. And there’s really only one thing that differentiates between the two; it’s the unwavering belief in your ability to shape your own future. There are a lot of people out th…

The Ponzi Factor: Proof by Definition

I talked with the author who has written a book so dangerous if this information becomes mainstream it alters the entire engine of our economy. Tong Lu has revealed just how our stock market is the dictionary definition of a Ponzi scheme. Here’s my conver…

Counting by tens | Counting | Early Math | Khan Academy

More Articles