This KS2 Maths article explains how Roman numerals uses letters instead of numbers to represent values.

The history of the Super Bowl is rooted in the ancient Roman system for counting and it's actually aimed at easing fan confusion. We'll help break it down for you here.

The NFL opted to use the number 50 instead of "L," as designers felt the Roman numeral lacked visual appeal for marketing purposes. Roman numerals returned the following year with Super Bowl LI.

The Super Bowl uses Roman numerals to identify each version of the game, which can confuse viewers trying to read the old numerical system.

This week calls for some throwback thinking. If you can recall how Roman numerals work, you'll get at least one question correct.

"The Roman numerals were adopted to clarify any confusion that may occur because the NFL championship game — the Super Bowl — is played in the year following a chronologically recorded season.

What number is the Super Bowl this year? In Roman numerals, LV equals 55. Roman numerals amount to addition and subtraction problems once you know what the individual symbols/letters represent.

The Super Bowl has relied on Roman numerals to distinguish one championship game from another — since Super Bowl V in 1971.

The NFL is dropping its tradition of Roman numbers this year, opting to officially call the game Super Bowl 50.