Hello, friends! Today, we’re going to learn something super cool with base 10 blocks. It’s called the “trading and adding” strategy. Let’s dive in and have some fun!
Base 10 blocks are special tools that help us with math. Here’s what they mean:
If you have 10 small cubes, you can trade them for one long block. Both mean the same thing: 10!
Let’s see how this works with a fun example:
Imagine you have one long block and three small cubes, and you want to add them to another long block and seven small cubes. First, you put all the small cubes together. Three plus seven equals ten, right? So, you can trade these ten small cubes for one long block.
Now, you have two long blocks. Isn’t that neat?
Ready to try it out? Let’s solve some problems using trading and adding:
You have two long blocks and four small cubes. You want to add them to one long block and eight small cubes. Here’s what you do:
So, the answer is four long blocks and two small cubes!
Now, let’s add three long blocks and five small cubes to two long blocks and five small cubes:
The answer is six long blocks and zero small cubes!
Finally, let’s add four long blocks and seven small cubes to three long blocks and seven small cubes:
The answer is eight long blocks and four small cubes!
Whenever you have more than ten small cubes, you can trade them for one long block. This makes adding so much easier!
Thanks for learning with us today. Keep practicing, and you’ll be a base 10 block expert in no time. See you next time!
Base 10 Block Hunt: Go on a scavenger hunt around your home or classroom to find objects that can represent base 10 blocks. For example, use small building blocks or pieces of cereal as small cubes (ones) and longer items like pencils or straws as long blocks (tens). Try to create different numbers using your found objects and practice trading ten small items for one long item. Can you make the number 23 using your objects?
Trading Game: Pair up with a friend and play a trading game. Each of you starts with a mix of small cubes and long blocks. Take turns rolling a dice, and add that many small cubes to your collection. Whenever you have ten small cubes, trade them for a long block. The first person to collect a certain number of long blocks, like five, wins the game. How many trades did you make?
Everyday Math Detective: Be a math detective and look for examples of the number 10 in your daily life. Count how many fingers you have, how many toes, or how many wheels are on two bicycles. Think about how these examples relate to the concept of trading ten small cubes for one long block. Can you find other examples where things are grouped in tens?
Here’s a sanitized version of the provided YouTube transcript:
—
Welcome to Kids Academy! Hello everyone! Let’s open the worksheet. Don’t forget to like this video and subscribe to our channel. You can find the link to this app in the comments below.
Today, we’re going to be looking at an awesome base 10 block strategy called trading and adding. Let’s review what the base 10 blocks represent, and then I’ll show you the strategy.
Before we begin the worksheet, remember: one cube represents just one, and one long represents 10 individual cubes. This means that if I had 10 individual cubes spaced out, I could trade them for one long. Both 10 individual cubes and one long represent the number 10.
The trading and adding strategy is really cool! For example, if I wanted to add one long and three cubes plus one long and seven cubes, I could first combine all my cubes. I know that three plus seven equals ten, so I could trade these cubes for one ten. Then I have one long on this side plus one long on the other side, giving me a total of two longs.
Let’s use this trading and adding strategy to help us complete the worksheet. We’ll read the directions and get started right away: trade once for tens and solve the addition problems.
In our first problem, I have two tens and four ones plus one ten and eight ones. My goal is to use the cubes and trade ten cubes for one ten. I’m going to take the four cubes on the left side and add them to six of the cubes on the right side. I know that four plus six equals ten, so I’m going to trade these ten cubes for one long. Now I just have two ones, and I can count my tens: one, two, three, four tens, giving me a total of four tens and two ones. The trading and adding strategy makes adding a lot easier!
Let’s try it again on the next example. In the next problem, I’m going to add three tens and five ones plus two tens and five ones. First, I want to add my ones and see if I can make a ten. I have five ones plus five ones, and I know that five plus five equals ten. I can trade these ten cubes for one long. Now I can just count the longs: one, two, three, four, five, six. There are six tens, and we’re left with zero ones, making the correct answer six tens and zero ones.
Our last example has us adding four tens and seven ones plus three tens and seven ones. Let’s see if we can combine these ones to make a ten. First, on my right side, I’m going to count four ones and add these four ones to six ones on the other side of my equation. I know that four plus six equals ten, so I can trade these cubes and make them a ten.
Now, let’s count the total tens and ones to see how many we have. I have eight tens and four ones, making my final answer eight tens and four ones.
Remember, if you’re adding base ten blocks and you see that you have more than ten ones, you can combine these cubes and trade them for one long because one long represents 10 individual cubes.
Thanks for watching this trading and adding strategy! I’ll see you next time. Don’t forget to like us and subscribe to our channel. Find links to our apps in the comments below.
—
This version maintains the educational content while removing any informal or distracting elements.
