ClassX Video Lessons Grade Grade 2 Adding & Subtracting by 10 | Place Value for Kids | Khan Academy Kids
Hey there! Today, we’re going to learn about subtraction using blocks and rods. It’s a fun way to understand how numbers work. Let’s dive in!
Imagine you have blocks and rods. In this example, 60 blocks are the same as 6 rods. Each rod is made up of 10 blocks. So, if you have 6 rods, you have 60 blocks in total.
Now, let’s say we want to subtract 10 blocks from 60 blocks. Since 10 blocks make up 1 rod, we can think of this as taking away 1 rod from the 6 rods we have.
Here’s how we do it:
So, 60 blocks minus 10 blocks equals 50 blocks. In other words, 60 minus 10 is 50!
By using blocks and rods, we can easily see how subtraction works. It’s all about taking away groups of 10. This method helps us understand numbers better and makes math more fun!
Build Your Own Blocks and Rods: Gather some small objects like LEGO bricks, coins, or buttons. Use these to create your own blocks and rods. Remember, 10 small objects make 1 rod. Try making 6 rods and then practice subtracting 1 rod by removing 10 objects. How many rods and objects do you have left?
Subtraction Scavenger Hunt: Go on a scavenger hunt around your house or classroom to find items that can be grouped into tens. For example, you might find 10 pencils, 10 crayons, or 10 toy cars. Group them into rods and practice subtracting one group at a time. How many items do you have left after each subtraction?
Story Time Subtraction: Create a short story where a character has 60 treasures (like blocks) and loses 10 treasures (1 rod) during an adventure. Draw pictures to show what happens to the treasures as they are subtracted. How many treasures does the character have left at the end of the story?
