Compare Numbers – Greater Than Less Than | Math for 1st Grade

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[Music]

Hello, boys and girls! We’re at the racetrack ready to compare some numbers. Let’s see which cars are participating in the race today and which numbers we will compare. You already know about place value and how to compare numbers using base 10 blocks. Now I’ll help you find numbers that are greater than or less than others.

On your mark, get set, go!

Do you like that racing helmet? The first number is 25. We can look at the digit in the tens place first to help compare numbers. How many tens does my number have? 25 has two tens and five ones.

Now, what number is this car showing? Is 31 greater than or less than 25? Both 25 and 31 have numbers in the tens place. We see that 3 is greater than 2, which means that 31 is greater than 25. We put up the greater than sign with the small pointed side facing the smaller number, so the sign looks like this: >.

Look, there’s another car with a new number! Is that number greater than 25? First, we can look at the largest place, which are the numbers on the far left. They are the same; they are both 2. That’s okay! If the tens place is the same, we can compare the ones place.

I can hear some cars getting ready to race! Let’s compare their numbers. Do you remember where we start when we compare? They both have fours and fives in their numbers, but the one with the five in the tens place has a greater value. That’s why we should always start at the left with the largest place. 54 is greater than 45, which also means that 45 is less than 54.

Do you see another number that is less than 54? Yes, 25 is less than 54. It’s also less than 45 because number 25 only has a 2 in the tens place.

There are two more cars. Are the numbers greater than or less than 25? It looks like they both have bigger numbers in the tens place, so they are both greater than 25. Remember to look left and compare the tens place first.

On your mark, get set, go!

Thanks for watching, boys and girls! See you next time!

[Music]

Hello, boys and girls! It’s Teacher Mike here, and today we’re going to look at a worksheet that asks us to compare numbers. Before we get started, let’s remind ourselves of some important things to know about place value.

First, which base 10 block do you see? This is a cube. Do you know the value of the cube? The cube is worth just one. How about a long? The long is made up of ten individual cubes, so the long is worth ten.

Let’s use this information to help us compare numbers with base 10 blocks. Let’s say we have a number with two longs and two cubes. We want to compare this to a number with one long and three cubes.

One way we can see what this number is quickly is by counting the base 10 blocks starting with the longs. In this number, we have one long representing 10 and another long representing 10. So we can count by 10 two times: 10, 20. Now we know we have 20, and we can just count on with our other two cubes, which represent ones: 20, 21, 22. So these base 10 blocks represent the number 22.

Now, how about the number on the right side? I see 110. If there’s only one 10 in this number, it’s probably smaller than 22. Let’s count all the base 10 blocks just to be sure. After 10, we can count on with our three cubes: 10, 11, 12, 13. So we know that 22 is greater than 13.

Let’s get started with our worksheet! The directions say to start with the first problem comparing numbers using base 10 blocks. Count tens and ones in each pair and compare the numbers. Check the pairs where the signs of comparison are correct.

We have a reminder at the top about the longs being worth ten and the cubes being worth one. Let’s get started by counting the base 10 blocks.

In our first picture, how many longs are there? I see one, two, three, four longs. I know that’s worth 40. Now, let’s see how many cubes we have. There’s one, two, three, four, five cubes. So let’s count on from 40: 41, 42, 43, 44, 45. Our first number has 45.

Let’s compare it to the number on the right. We can first start by counting how many longs there are. In this number, we can see that there are one, two, three, four, five longs. Do you think this number with five longs is going to be greater or less than 45?

How much is five tens really worth? Let’s count the tens: 10, 20, 30, 40, and 50. So already, that’s greater than 45. Let’s count the cubes just to get a final count: 51, 52, 53, 54. So 54 is greater than 45.

Now let’s check if the comparison symbol is facing the right way. It is! The symbol is eating the 54, so we know that this is correct. We can check the box.

Let’s take a look at our next example. In this problem, on the left, we have 2 tens, which equals 20. Let’s see how many ones we have. Counting from 20: 21, 22, 23, 24, 25, 26, 27, 28. There are 28 base 10 blocks on the left.

Now let’s compare that to the number on the right. The number on the right has one, two, three, four longs. I’m already thinking the number on the right is going to be bigger because it has more longs. Remember, the longs are worth 10 each, and this one has four tens: 10, 20, 30, 40.

So this has 40 cubes. We haven’t even counted the two cubes yet, which gives us 41 and 42. So this number is definitely greater than 28.

Now let’s check which way the comparison symbol is showing. In this example, the comparison symbol shows that 28 is greater, so this is not true. We cannot check this as correct.

Let’s take a look at our next example. Wow, there are a lot of longs in this one! Let’s see if we can figure out which number is larger by just counting the longs.

We have one, two, three, four, five, six, seven, eight longs in the first number. In the other number, we also have one, two, three, four, five, six, seven, and eight. So they both have eight tens, which means they are both equal to eighty.

But the number on the left also has one, two, three, four, five cubes, making it 85. So the number on the left, 85, is larger. But the comparison symbol shows that 80 is larger, and that’s not correct.

Now let’s look at the last problem. Again, let’s count the base 10 blocks and see how many there are in each problem.

Starting with the longs on the left, there are one, two, three, four, which means there’s 40. Let’s count the longs on the right: 10, 20, 30, and 40.

So they both have four longs. Let’s count the cubes. There’s one, two, three, four, five, six, seven. So we have 40 plus seven, which gives us 47 on the left.

Now let’s count the cubes on the right: 41, 42, 43, 44, 45, 46, and 47. There are also 47 cubes on the right. These numbers are equal to each other, and we can see from the comparison symbol that it’s correct.

Remember, boys and girls, the longs are worth 10, so you can count by tens to help you compare numbers easier. Then look and see if the other number has a greater or less than number of tens. If they’re the same, count the ones or cubes to see which number is greater.

Thanks for watching, boys and girls! We’ll see you next time!

Alright, welcome back! It’s nice to see you again. Today, we’re going to be comparing numbers, and we’ve got a Thanksgiving-themed worksheet. This is going to be lots of fun!

The directions say to help the turkey find the way out by drawing a line to connect all the numbers that are less than 57.

Let’s think about this. Let’s draw out a number line and put 57 in the middle. What would be the next number up from 57 that would be greater? That would be 58, 59, and 60. Those would all be examples of numbers that are greater than 57.

But we’re looking for numbers that are less than 57, like 56, 55, 54, 53, and all the way down to zero.

So let’s start at the turkey. Is 77 less than 57? No, it’s greater. What about 18? Yes, 18 is less than 57.

Next, we can either go to 99 or 21. Which one is less than 57? 99 is too big, but 21 is smaller.

Now we can either go to 58 or 3. Which one is less than 57? 3 is less than 57, while 58 is greater.

Next, we can go to 60 or 56. Which one is less than 57? 56 is less than 57.

Finally, we have 57 or 31. Is 57 less than 57? No, it equals 57. So we need to go to 31.

Look at that! We made our way out and helped the turkey escape the maze. Great job today! Bye-bye!

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This version maintains the educational content while removing unnecessary repetition and ensuring clarity.