Complete the previous and following numbers:
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Complete the previous and following numbers:
To find the numbers before and after 9999, we will follow these steps:
Let's apply these steps:
Step 1: Calculate the predecessor of 9999.
The predecessor is .
Step 2: Calculate the successor of 9999.
The successor is .
Therefore, the numbers before and after 9999 are and , respectively.
The correct choice among the options is option 2: .
What number comes before 31,000?
When you add 1 to 9999, you're at the highest four-digit number! The next number in sequence must be 10000, which naturally becomes a five-digit number. This is like counting: 9, 10 - sometimes the digit count increases.
Before means subtract 1 (predecessor), and after means add 1 (successor). Think of it as moving backward or forward on a number line by one step.
That's a common mistake! 9990 is actually much smaller than 9999. Remember: the number after must be larger, so is correct.
Yes! This happens at every power of 10 minus 1: 9→10, 99→100, 999→1000, 9999→10000. The pattern is all 9's followed by 1 with zeros.
Count in sequence! Start from 9998: 9998, 9999, 10000. Each number should be exactly 1 more than the previous one. You can also use a number line or calculator to verify.
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