# Greater Than / Less Than

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Greater Than / Less Than
CCSS.MATH.CONTENT.1.NBT.B.3

## What did you learn today about greater than and less than?

### Today we learned about greater than or a way to talk about bigger numbers. We also learned about less than or a way to talk about smaller numbers. We also learned how to compare numbers using greater than and less than.

Finally, we learned that the symbols used when creating a math sentence with greater than and less than.

Just remember that the opening of the symbol ALWAYS opens towards the bigger number... like a Dundee opening their mouth towards the greater plate of food!

### TranscriptGreater Than / Less Than

: "Henry, it's almost time for Dundee to get here, are you ready?" : "Of course I am!" : "Hi, Dundee!" : "Wait (...) I thought you were bringing food." : "That's okay, we have some veggies we can share with you!" While Skylar and Henry show Dundee vegetables, they can use "greater than, less than" to talk about the amount of food. We compare numbers by talking about how big or small they are with the phrases greater than, or less than. Instead of writing the words greater than or less than, we use these symbols. Greater than is a way to talk about a number that is bigger than another. Less than is a way to talk about a number that is smaller than another. These symbols look like the opening of a crocodiles mouth... and the opening of the symbol ALWAYS points to the GREATER number. Just like Dundee always opens their mouth up for the bigger plate of food! Let's see what Skylar and Henry bring to Dundee first. Skylar brings Dundee fifteen carrots while Henry brings twenty-six. Is fifteen greater than, or less than twenty-six? Fifteen is less than twenty-six When we compare two numbers, we create a math sentence and can read it. Just like when we read sentences in books, when we read math sentences we read from left to right. If we compare fifteen and twenty-six, we would read it fifteen is less than twenty-six. It looks like Dundee has requested even more food! Skylar and Henry bring out some cucumbers to impress Dundee. This time Henry brings out thirty cucumbers while Skylar brings out twenty. How can we compare their plates of cucumbers? We can compare using greater than or less than. Is thirty greater than or less than twenty? It's greater than! That means we will use the greater than symbol. If we read our math sentence we would say thirty is greater than twenty. Before we get to that party, let's summarize. Today we learned about greater than and less than. It's a way to compare numbers using symbols. Greater than is a way to talk about a number that is bigger than another. Less than is a way to talk about a number that is smaller than another. We also learned about the symbols used when creating a math sentence with greater than and less than. Remember that the opening of the symbol ALWAYS opens towards the bigger number... like a Dundee opening their mouth towards the greater plate of food! Now, let's see about that party! : "What do you mean, they ate all of the food we gave them?" : "It's okay, we'll order a pizza for the party!" : "Next time, let's give them fruit so they don't eat all of it!"

## Greater Than / Less Than exercise

Would you like to apply the knowledge you’ve learned? You can review and practice it with the tasks for the video Greater Than / Less Than.
• ### Show which number is greater.

Hints

Count the images to figure out which number is larger.

Remember, the greater than and less than sign is like a hungry alligator. The opening faces the larger number.

Solution

16 is the larger number, so we use the greater than symbol to say 16 > 12. The opening faces the larger number. Now Dundee can eat more apples!

• ### Complete the math sentence.

Hints

Think about which number is greater, and which is less. The opening of the symbol always faces the larger number.

When we write the greater than sign, it faces the greater number: 65 > 44.

When we write the less than sign, it faces away from the smaller number: 44 < 65

Solution

11 is less than 38, so we write the number sentence as 11 < 38.

• ### Select the correct math sentence.

Hints

Read the number, the sign, and the other number out loud to find your math sentence.

Remember, the math sentence is read from left to right.

Solution

The math sentence that matches 61>12 is sixty one is greater than twelve. We read the first number, sixty one, followed by the sign, greater than, and the last number, twelve. The math sentence is sixty one is greater than twelve.

• ### Highlight the matching number sentences.

Hints

Remember, the two numbers are 7 and 14. Which number is greater?

Try saying the math sentence out loud.

Solution

The numbers were 14 and 7. Since 14 is greater than 7, we write it using the greater than symbol (14 > 7). Since 7 is less than 14, we write it using the less than symbol (7 < 14). Dundee is going to eat the 14 cupcakes, since that is the greater amount!

• ### Complete the sentence.

Hints

Look at the example 10 > 2. Is the opening toward the bigger or smaller number here?

Solution

The opening of the symbol always opens toward the bigger number! Just like Dundee opens his mouth towards the biggest pile of food, the symbol opens towards the bigger number. Example: 5 > 3, 3 < 5.

• ### Match the number sentence to the symbol.

Hints

Remember, the symbol faces the larger number like a hungry alligator.

Read the number sentence from left to right.

Solution

We place the corresponding symbols by looking at which number is greater. The greater than symbol is represented by >, and the less than symbol is represented by <. The alligator mouth faces the greater number.