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Explore The KitsComparing 3-Digit Numbers
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What you will learn from this videoWhat you will learn
- We'll learn how to compare 3-digit numbers using place value.
- We will also learn how to use the LESS THAN, GREATER THAN and EQUAL TO symbols when comparing 3-digit numbers.
- And we'll learn that we can use this knowledge to help us see who’s winning in a video game, a balloon car race, and even make delicious popcorn!
- Discussion Questions
Before Video
How can you break apart 34 using place value?ANSWER34 is 3 tens and 4 ones.
602 is 6 hundreds, 0 tens, and 2 ones.
Compare the digits in the tens place. 7 is greater than 3, so 72 is greater than 38.
The digits in the tens place are the same. Next, compare the digits in the ones place. 5 is less than 9, so 45 is less than 49.
Compare the digits in the tens place. 32 has a 3 in the tens place. 9 has no tens, so it has a 0 in the tens place. 3 is greater than 0, so 32 is greater than 9.
After Video
What process do you use to compare numbers?ANSWERI first compare the digits in the greatest place value. If the digits are the same, I compare the next greatest place value. For example, to compare 604 and 356, I first compare 6 and 3. 6 > 3, so 604 > 356.
The digits in the hundreds place are the same. Next, compare the digits in the tens place. 5 is less than 8, so 156 is less than 187.
The digits in the hundreds and tens places are the same. Next, compare the digits in the ones place. 2 is greater than 0, so 672 is greater than 670.
Compare the digits in the hundreds place. 234 has a 2 in the hundreds place. 97 has no hundreds, so it has a 0 in the hundreds place. 2 is greater than 0, so 234 is greater than 97.
The open side of the symbol always faces the greater number. It is like an alligator mouth that always wants to eat the greater number.
- Vocabulary
- Place value DEFINE
The value of a digit based on its position in a number.
- Compare DEFINE
When you compare two numbers, you find which number is greater and which number is lesser.
- > DEFINE
If the value of one number is more than the other, we say it is greater than. This symbol shows that the number on the left is greater. 40 > 10.
- < DEFINE
If the value of one number is smaller than the other, it is less than. This symbol shows the number on the left is less. 10 < 40.
- = DEFINE
When comparing two numbers, if the values are the same, we say they are equal. This symbol means the quantities on both sides are equal. 40 = 40.
- Expanded Form DEFINE
Shows the number as a sum of the value of the digits. For example, 234 = 200 + 30 + 4.
- Place value DEFINE
- Reading Material
- Practice Word Problems
- Practice Number Problems
- Lesson Plan
- Teacher Guide