Some quipu found were several feet in length, so it was very important for the quipu camayocs to remember the who, where and what of each string and its placement on the larger cord. It has been found on the writings on the stones of monument walls of ancient time.
Keep Exploring Britannica Education. Making a quipu was easy.
Now imagine being able to do all this without a written language. See numerals and numeral systems. Indian arithmetic, moreover, developed consistent and correct rules for….
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Reeve, 1937, page 14. In any case, abacus beads can be readily manipulated to perform the common arithmetical operations—addition, subtraction, multiplication, and division—that are useful for commercial transactions and in bookkeeping. Those cones, upon each of which was drawn the symbol of one of the nine Hindu-Arabic digits, were called apices.
Pisano was educated in North Africa, where he learned and later carried to Italy the now popular Hindu-Arabic numerals.
In fact, the Eastern Arabic numerals also called Arabic—Indic numerals are specific numerals currently used to represent the Hindu—Arabic numeral system in conjunction with the Arabic alphabet in the countries of the Arab east, and its variant Persian numerals in other countries.
Following are some examples of larger numbers.
If a nest contains four eggs, one can safely be taken, but when two are removed the bird generally deserts. William C.
McIntyre, Loren. Instead fingers, rocks, sticks or eyes were used to represent numbers. But the intellectual leap from the concrete idea of two things to the invention of a symbol for the abstract idea of "two" took many ages to come about.