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The sum of seven consecutive natural numbers in the fourth grade math problem in primary school is 350. What is the largest number and the smallest number among these seven numbers?
350/7=50 This is the middle number, and the other numbers are 47 48 49 and 5 1 52 53 respectively.

Divide by 7, because the largest number plus the smallest number equals twice the middle number. Similarly, the second and third largest numbers add up to twice the middle number, so these seven numbers add up to seven times the middle number.