Comparing Numbers: Ordering 3-Digit Numbers from Greatest to Least
Let’s dive into comparing 3-digit numbers! We’ll learn how to arrange these numbers from the greatest (largest) to the least (smallest). It’s easy if you follow these steps!
Steps to Compare 3-Digit Numbers:
- Start with the first digit: The first digit tells you a lot. A number that starts with a bigger digit is always bigger. For example, 789 is greater than 456 because 7 is greater than 4.
- If the first digits are the same, look at the second digit: When two numbers have the same first digit, check the second digit. For instance, if we compare 754 and 768, both start with 7, but 6 is bigger than 5, so 768 is larger.
- Continue to the third digit if needed: If the first and second digits are the same, compare the third digit. For example, 756 and 759 have the same first two digits, but 9 is larger than 6, so 759 is greater.
Example:
Let’s arrange these 3-digit numbers from greatest to least:
- 423
- 578
- 612
- 789
- 567
Step 1: The largest number here is 789 because it starts with the highest first digit (7).
Step 2: The next number is 612 because it starts with 6, which is the next highest.
Step 3: Next, we compare the numbers starting with 5. Between 578 and 567, we see that 7 is greater than 6, so 578 comes before 567.
Step 4: Lastly, we have 423, the smallest number because 4 is smaller than all the other first digits.
So, the order from greatest to least is:
789, 612, 578, 567, 423
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