To add three numbers correctly, align them by place value (ones under ones, tens under tens, hundreds under hundreds, thousands under thousands) and add column by column to find the grand total. This method works for both small numbers (e.g., 25 + 28 + 6 = 59) and large numbers (e.g., 235 + 162 + 3,417 = 3,814).
Deep Dive
Prerequisite Knowledge
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Deep Dive
Adding Three Numbers in English Class3 Maths
Added:Hello, dear students. Welcome to today's explainer. I am your professor, and I am so happy you're here with me. Today, we are going to learn something truly wonderful. We're going to learn about adding three numbers.
Take a deep breath, relax. There is absolutely no rush at all. We will go very, very slowly, step by step, so everyone understands perfectly. Let's dive into this beautiful world of numbers together, shall we?
Here is our gentle learning roadmap for today. Number one, welcome to triple addition. Number two, rule one, place value alignment. Number three, example one, the school picnic. Number four, example two, the flower garden. And finally, number five, your grand total.
Section one, welcome to triple addition, combining values. Today, we'll discover how you can easily add three different numbers together to find one grand total.
Moving right into section two, rule one, place value alignment. This rule, my dear students, is the absolute secret to adding big numbers without ever making a mistake.
Before we use our secret rule, let's make sure we understand exactly what we are looking for.
A grand total is combining all values of three different numbers into one final amount.
Let's read that beautifully together one more time. Very slowly, a grand total is combining all values of three different numbers into one final amount. That is our goal today.
To find that grand total, we absolutely must remember our place values. Look at our list here. We have thousands, we have hundreds, we have tens, and we have ones. When we are adding three numbers, it is crucial that we line them up by these exact place values. You must line up your three numbers perfectly. Ones under ones, tens under tens, hundreds under hundreds. Let me repeat that for you because it's so important. Lining them up perfectly is exactly how we find the correct answer. Section three, example one, the school picnic. I want you to close your eyes for just a moment and imagine a lovely school trip. A bright sunny day, a big green park, and a fun picnic with your friends.
Now, let's open our eyes and count the wonderful people going on this picnic.
We have three groups. Step one, there are 25 boys. Step two, there are 28 girls. And step three, there are six teachers.
Let me read that slowly for you again so you can picture it perfectly. Step one, 25 boys. Step two, 28 girls. Step three, six teachers. We're going to add these three groups together. And here is our beautiful grand total, 59. When we take 25 and we add 28 and we add six, we get exactly 59 people on the trip. Let me repeat that math sentence for you one more time. 25 + 28 + 6 = 59. You're doing so wonderfully.
Section four, example two, the flower garden.
Now, our secret rule works for combining much larger numbers, too. Please do not be afraid of big numbers. I promise, it will be very easy.
Imagine walking into a beautiful, fragrant garden. Let's look at the lovely flowers we find.
Step one, we see 235 roses. Step two, we see 162 marigolds. And step three, we see 3,417 lilies. Let me say those big beautiful numbers one more time for you. Step one, 235 roses. Step two, 162 marigolds. Step three, 3,417 lilies. We need to add all three of these numbers together.
This brilliantly illustrates our golden rule. Notice how carefully we organize our numbers. T for thousands, H for hundreds, T for tens, and O for ones.
See how perfectly we've lined them up?
The five, the two, and the seven are safely together in the ones column. The three, the six, and the one are lined up safely in the tens column. Let me remind you once more. This is the secret.
Always line up your ones under your ones and your tens under your tens. When we add them all gently down their columns, look at the magnificent grand total we discover. 3,814.
That's right. Let's say the math sentence together very slowly. 235 + 162 + 3,417 = 3,814 flowers in total. You just added three very large numbers together and you did it perfectly by combining their values. Section five, your grand total, wrapping up.
I want to sincerely congratulate you.
You learned about place value alignment and you saw how it works for small numbers on a school picnic and very large numbers in a flower garden.
I am so proud of your slow, careful learning today.
As we finish our explainer today, I want to leave you with one final lovely question to think about. What three big numbers will you add together today?
Perhaps you'll count three different types of books on your shelf or three different colors of cars on your street.
You have the secret tool now. Thank you so much for learning with me and I will see you next time.
>> [music] [bell]
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