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Chengguan primary school bought a new batch of books. Why add 1 to them?
Easy to manage counting.

The number of books in general schools is arranged in sequence, and the total number of books in this number interval is calculated by subtracting the maximum number from the minimum number and adding 1. Adding 1 can reduce the error and make the management more accurate.

Tips similar to the number plus 1 usually make the work faster and more efficient. We should make good use of these skills.