Answer:
400
Step-by-step explanation:
Given
718 - 331
Required
Estimate the difference
To estimate the difference of the above expression, we simply subtract.
But the condition in the question says, each number is rounded to the nearest 100.
So, the first step is to round each number
Rounding 718.
Digit 7 stands as the 100 value, so our rounding digit is the next digit to 7 which is 1.
The rule of approximation is that, if the rounding digit is between 0 and 4, the it'll be approximated to 0, else it'll be approximated to 1 and added to the standing digit.
So, 718 becomes approximated to 700
Similarly, 331 gets approximated to 300
718 - 311 becomes
700 - 300 = 400
Hence Max's estimate of the difference is 400
