Complete the previous and following number:
We have hundreds of course questions with personalized recommendations + Account 100% premium
Complete the previous and following number:
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: The predecessor of 81,000 is obtained by subtracting 1 from it:
.
Therefore, the predecessor is .
Step 2: The successor of 81,000 is obtained by adding 1 to it:
.
Therefore, the successor is .
Therefore, the solution to the problem is that the numbers are and .
The correct choice from the options provided that matches this result is:
Choice 3:
What number comes before 31,000?
The predecessor comes before a number (subtract 1), while the successor comes after (add 1). Think of them as the previous and next numbers in counting order.
Commas help with reading but don't affect the math. Whether you write 81,000 or 81000, the predecessor is still found by subtracting 1 to get .
Handle it the same way! . The last zero becomes 9, and you borrow from the left digits just like in regular subtraction.
Count by ones to verify: your first number + 1 should equal the middle number, and middle number + 1 should equal the last number. Each step increases by exactly 1.
Just subtract 1! For numbers ending in zero, remember that borrowing happens: the zero becomes 9, and you reduce the digit to its left by 1.
Get unlimited access to all 18 Magnitude up to a Million questions, detailed video solutions, and personalized progress tracking.
Unlimited Video Solutions
Step-by-step explanations for every problem
Progress Analytics
Track your mastery across all topics
Ad-Free Learning
Focus on math without distractions
No credit card required • Cancel anytime