Complete the Sequence: Finding Missing Numbers Around 84100

Q: What does consecutive mean in math?

Consecutive numbers follow each other in order with no gaps. Like counting: 5, 6, 7, 8. Each number is exactly 1 more than the previous number.

Q: Why do we subtract 1 and add 1?

To find consecutive numbers, we need the numbers that come immediately before and after. Subtracting 1 gives the predecessor, adding 1 gives the successor - no skipping allowed!

Q: How can I check if my sequence is correct?

Look at your three numbers in order. Each number should be exactly 1 more than the previous number. Count up: 84099 → 84100 → 84101. Perfect!

Q: Is there a pattern with large numbers?

Yes! The pattern works for any size number. Whether it's 5, 84100, or 999999, consecutive numbers are always found by subtracting and adding 1.

Consecutive Numbers with Five-Digit Integers

Fill in the missing numbers:

$\Box,84100,\Box$

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Step-by-step written solution

Follow each step carefully to understand the complete solution

Understand the problem

Fill in the missing numbers:

$\Box,84100,\Box$

Step-by-step solution

To solve this problem, let's determine the consecutive numbers surrounding 84100:

Step 1: Identify the existing number given, which is 84100.
Step 2: To find the predecessor, subtract 1 from 84100: $84100 - 1 = 84099$ .
Step 3: To find the successor, add 1 to 84100: $84100 + 1 = 84101$ .

The number that comes before 84100 is 84099, and the number that comes after 84100 is 84101. Therefore, the sequence including the given number is:

$84099, 84100, 84101$

Therefore, the correct answer is: $84099, 84101$ , which corresponds to choice id="4".

Final Answer

$84099,84101$

Key Points to Remember

Essential concepts to master this topic

Predecessor Rule: Subtract 1 from given number to find previous
Successor Technique: Add 1 to 84100 gives 84101 as next number
Verification: Check sequence flows naturally: 84099, 84100, 84101 increases by 1 ✓

Common Mistakes

Avoid these frequent errors

Subtracting or adding 10, 100, or 1000 instead of 1
Don't subtract 10 to get 84090 or add 100 to get 84200 = skipping numbers in sequence! This creates gaps instead of consecutive numbers. Always add or subtract exactly 1 for the immediate predecessor and successor.

Practice Quiz

Test your knowledge with interactive questions

Select the predecessor of the number 2100:

FAQ

Everything you need to know about this question

What does consecutive mean in math?

Consecutive numbers follow each other in order with no gaps. Like counting: 5, 6, 7, 8. Each number is exactly 1 more than the previous number.

Why do we subtract 1 and add 1?

To find consecutive numbers, we need the numbers that come immediately before and after. Subtracting 1 gives the predecessor, adding 1 gives the successor - no skipping allowed!

What if the number ends in zeros like 84100?

It doesn't matter what digits the number has! The rule stays the same: subtract 1 for the number before, add 1 for the number after. So 84100 - 1 = 84099.

How can I check if my sequence is correct?

Look at your three numbers in order. Each number should be exactly 1 more than the previous number. Count up: 84099 → 84100 → 84101. Perfect!

Is there a pattern with large numbers?

Yes! The pattern works for any size number. Whether it's 5, 84100, or 999999, consecutive numbers are always found by subtracting and adding 1.

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