What is the name of the English number system?

Answer 1

There is no "English" number system. The numerals commonly used with written English and many other languages, that look like 0 1 2 3 4 5 6 7 8 9, are called Arabic numerals because they are derived from numerals used by the Arabs, who invented the numeral for "nothing", the zero. The next most commonly used numerals are the Roman Numerals, which look like I II III IV V VI VII VIII IX X and so forth.