The three-digit number Joyce is thinking about is 648
From the question, we understand that:
- The number is 3-digit
- It has 8, 4 and 6
- When rounded to the nearest 100, the number is 600
The possible numbers from the set are:
846, 864, 468, 486, 648 and 684
Round the numbers to the nearest 100
800, 900, 500, 400, 600 and 700
When 648 is rounded, it gives 600
Hence, the three-digit number Joyce is thinking about is 648
Read more about real numbers at:
https://brainly.com/question/2475734
