Addition and subtraction were first used by a German 500 years ago, and square was first used by a British mathematician more than 300 years ago. Is this right or wrong?

Don't say for sure, think for yourself. We often say that Arabic numerals were not invented by Germans. Besides, 500 years ago, that is, 15 12, which was the 15th century, China's nine chapters of arithmetic were hundreds of years earlier than this, so it should not be used by Germans, so it was taken at the back.