1, the formula for distinguishing greater than sign and less than sign: left big, greater than sign; Small on the left, smaller than the size.

2. The greater than sign is on the left and the less than sign is on the right.

3. Next to the opening is a big number, and next to the sharp point is a decimal. The opening faces the big number and the tip faces the small number.

The greater than sign is the symbol of inequality operation in mathematics. The greater than sign is widely used in arithmetic, which is a necessary content for primary schools. In 1655, Wallis once said "equal to or greater than", and in 1670, he also said "equal to or greater than" and "equal to or less than" respectively.

Less than sign is one of the symbols of inequality operation in mathematics. Harry Arter, a British mathematician, used the symbol ""for the first time in his book Artisanal Analytica Praxis, but it was not published until after his death 163 1 year. "