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Ancient Rome
Historical Mathematics

Roman Numerals

Step into the shoes of an Ancient Roman architect. Decode the secret alphabet of numbers used to build the Colosseum!

The Power Symbols

I
1

Inspired by a single finger

V
5

Shape of an open hand

X
10

Two hands crossed

The Law of Placement

The Left Side Subtraction

If a small letter sits to the LEFT of a bigger letter, we subtract it! It’s like a countdown.

Symbol

IV

The Logic

5 - 1

Result

4

Symbol

IX

The Logic

10 - 1

Result

9

The Right Side Addition

If a small letter sits to the RIGHT of a bigger letter, we add it! It’s building upward.

Symbol

VI

The Logic

5 + 1

Result

6

Symbol

XI

The Logic

10 + 1

Result

11

The Chrono-Translator

Ancient Frequency Detected • Modern Link Established

Modern World

1

Ancient Rome

I
01 Initial 20 Complete

Challenge

Show your mental strength, Architect!

Recruit

Begin Your Exam?

Solve the Quiz correctly to earn the rank of Imperial Architect.

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