An overview of Babylonian mathematics

__http://www-history.mcs.st-andrews.ac.uk/HistTopics/Babylonian_mathematics.html__
Here is a quote:

"Perhaps the most amazing aspect of the Babylonian's calculating

skills was their construction of tables to aid calculation. Two

tablets found at Senkerah on the Euphrates in 1854 date from 2000

BC. They give squares of the numbers up to 59 and cubes of the

numbers up to 32. The table gives 82 = 1,4 which stands for

8^2 = 1, 4 = 1 60 + 4 = 64

and so on up to 59^2 = 58, 1 (= 58 60 +1 = 3481).

The Babylonians used the formula

ab = [(a + b)^2 - a^2 - b^2]/2

to make multiplication easier. Even better is their formula

ab = [(a + b)^2 - (a - b)^2]/4

which shows that a table of squares is all that is necessary to

multiply numbers, simply taking the difference of the two squares

that were looked up in the table then taking a quarter of the

answer."