Answer :
Final answer:
The best estimate of the difference between 678 and 218 is achieved by rounding both numbers to the nearest hundred and then subtracting: 700 minus 200 equals 500.
Explanation:
The question is asking for an estimate of the difference between two numbers: 678 and 218. To find this difference, you would subtract the smaller number from the larger number. However, since we're looking for an estimate, we can round these numbers to the nearest hundred to make the calculation simpler.
678 rounded to the nearest hundred is 700, and 218 rounded to the nearest hundred is 200. Now, subtracting the estimates gives us:
- 700 - 200 = 500
Therefore, the best estimate of the difference between 678 and 218 is 500.
