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What is the classification basis of positive, negative, 0 and integer, fraction, decimal and percentage in primary school mathematics? How to classify more scientifically and clearly?
First of all, it is divided into three categories: positive number, zero number and negative number.

Positive numbers are divided into positive integers and positive fractions (decimals can be converted into percentages).

Negative numbers are divided into negative integers and negative fractions (decimals can be converted into percentages).

0 is neither positive nor negative.

In short, fractions, decimals and percentages are interchangeable!

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