How Roman Numerals Originated?

We all are aware of Roman Numerals.

You might have seen these symbols in watches and clocks. Do you know how these symbols originated?

These symbols were started from the fingers of our hands

.

Next to get 6, 7, 8 and 9: 1, 2, 3 and 4 are added to 5

6 – VI, 7 – VII, 8 – VIII, 9 – VIIII and 10 – By two 5s (V and other inverted V)

Later on 4 (IV) and 9 (IX) were introduced by keeping I on left of 5 (V) and 10 (X) (Left means one less)

Larger Roman numerals were developed from other symbols.

M = 1,000 originally, the Greek letter phi – Φ – represented this value, which later on become CIƆ – which resembles M

D = 500 is half of 1,000 (CIƆ) i.e., IƆ which later on become D

C = 100, the original symbol was theta (Θ) and later become C. It is just coincidental, it stands for centum, the Latin word for a hundred.
L = 50 – this value was originally represented by a superimposed V and I, or by the letter psi – Ψ – which later flattened out to look like an inverted ‘T’, and then eventually came to resemble an L.