ClassX Video Lessons Youtube Channel Smile and Learn English DIVISIBILITY RULES of the Number 9 ????Math for Kids ➗
Welcome to our fun lesson about numbers that can be divided by nine! Today, we’re going to learn a cool trick to find out if a number is divisible by nine, using a fun example with bananas.
To see if a number can be divided by nine without any leftovers, we need to add up all the digits in the number. Let’s try this with an example:
Imagine we have the number 3,617. Here’s how we add its digits:
Now, we take the sum, which is 17, and add those digits together:
Since 8 is not 9, the number 3,617 is not divisible by 9. But if the sum of the digits was 9, or a number that adds up to 9, then it would be divisible by 9!
When the sum of the digits of a number is 9, it means you can divide the number by 9 without any leftovers. It’s like putting bananas into boxes and having none left over!
While I’m busy packing these bananas, you can explore more about numbers. Maybe visit my brother Trevor’s organic farm, where he can teach you other cool math tricks!
We’ve learned a lot today! Did you know there are many more videos where you can learn even more? Subscribe to the Smile and Learn educational channel to keep learning and having fun!
Banana Bunch Challenge: Gather a bunch of bananas (or use drawings of bananas) and label each one with a different number. Work with a friend or family member to check if each number is divisible by 9. Add up the digits of each number and see if they sum to 9 or a number that adds up to 9. For example, if you have the number 81, add 8 + 1 = 9, so it’s divisible by 9! Have fun seeing how many banana numbers you can find!
Number Detective: Become a number detective and find numbers around your home or classroom. Look at phone numbers, page numbers in books, or any other numbers you see. Choose a few and use the divisibility rule to check if they are divisible by 9. Write down your findings and share them with your class or family. Did you find any surprising results?
Create Your Own Number Story: Write a short story or draw a comic strip about a character who loves organizing things in groups of 9. Maybe they are a zookeeper who needs to divide animals into groups, or a chef who wants to make sure each dish has 9 ingredients. Use your imagination and include some math problems in your story for others to solve!
Here’s a sanitized version of the provided YouTube transcript:
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Welcome to our educational video on numbers divisible by nine!
Today, we’ll explore how to determine if a number is divisible by nine using a fun example involving bananas. First, we need to add the digits of the number. For instance, let’s take the number 3. If we add its digits, we get:
3 + 6 = 9
9 + 1 = 10
10 + 1 = 11
11 + 7 = 18
Now, we can divide this sum by 9. Since the remainder is zero, we can conclude that 18 is divisible by 9. This means we won’t have any bananas left over when we put them into boxes.
However, if the sum of the digits is too large, we can simplify it. In our case, the sum was 18, and if we add those digits together (1 + 8), we get 9. A number is always divisible by itself, so we’ve already solved our banana problem!
I’ll be here for a while loading these boxes, so feel free to explore in the meantime. You might want to visit my brother Trevor’s organic farm, where he can explain some divisibility rules you may not know yet.
We’ve learned so much in just one video! Did you know there are many more videos available? Imagine how much you could learn! Subscribe to the Smile and Learn educational channel to learn and have fun at the same time!
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This version removes any unnecessary elements and maintains a clear, educational tone.
