Insert the Appropriate Sign in 15,800□15,911

Number Comparison with Five-Digit Integers

Select the appropriate sign:

15,80015,911 15,800\Box15,911

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Select the appropriate sign:

15,80015,911 15,800\Box15,911

2

Step-by-step solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the numbers given: 15,800 15,800 and 15,911 15,911 .
  • Step 2: Compare these two numbers by examining digits from left to right.
  • Step 3: Determine the appropriate comparison sign.

Now, let's work through each step:
Step 1: We observe the numbers 15,800 15,800 and 15,911 15,911 .
Step 2: Starting from the left, both numbers have the digits 1 and 5 in the ten-thousands and thousands places, respectively, which are equal. At the hundreds place, both numbers show 8. At the tens place, 15,800 has 0, and 15,911 has 1. Since 0 is less than 1, we determine that 15,800 is less than 15,911.
Step 3: Therefore, the correct sign to place between the numbers is < < .

Therefore, the solution is to place the sign < < between the numbers: 15,800<15,911 15,800 < 15,911 .

3

Final Answer

<

Key Points to Remember

Essential concepts to master this topic
  • Rule: Compare digits from left to right by place value
  • Technique: When 15,800 vs 15,911, check tens place: 0 < 1
  • Check: Verify 15,800 < 15,911 using place value positions ✓

Common Mistakes

Avoid these frequent errors
  • Comparing numbers by counting digits or looking at the last digits first
    Don't compare 15,800 vs 15,911 by looking at the zeros or ones at the end = wrong comparison! This ignores place value importance. Always start from the leftmost digit and compare place by place until you find a difference.

Practice Quiz

Test your knowledge with interactive questions

Select the appropriate sign:

\( 24,909\Box24,990 \)

FAQ

Everything you need to know about this question

Why don't we compare the last digits first?

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Place value determines which digits are most important! The leftmost digits represent larger values. In 15,800 vs 15,911, the tens place difference (0 vs 1) matters more than any other digits.

What if the numbers look really similar?

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That's when careful place-by-place comparison is most important! Even if numbers like 15,800 and 15,911 seem close, one difference in place value determines the entire comparison.

Do I need to line up the numbers vertically?

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It can help! Vertical alignment makes it easier to compare corresponding place values:

  • 15,800
  • 15,911

Now you can clearly see digit differences.

What if both numbers have the same digits in most places?

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Keep comparing until you find the first difference! In 15,800 vs 15,911, the first four digits are identical (1-5-8-0), but at the tens place, 0 < 1, so 15,800 < 15,911.

Can I use a number line to help?

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Absolutely! On a number line, 15,800 comes before 15,911, which confirms that 15,800 < 15,911. The smaller number is always to the left of the larger number.

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