Abacus is a traditional Chinese calculation tool, can you perform the operation of squaring using an abacus?

With the abacus you can perform the operation of squaring.

Using the abacus can carry out the operation of addition, subtraction, multiplication and division, square opening, multiplication, bead multiplication can be directly multiplied, can also be based on the formula, the higher power if the power is prime, it is only a direct multiplication, if it can be decomposed by factorization, can be decomposed by factorization and then come to the calculation.

Bead calculation to open the square, generally have half-nine-nine open method, product difference open method, formula open method, multiplication open method. Open three times the square, there are three times the root of the open method, over the large quotient open method. Open five times, there are a variety of common multiplication to open five times. Open the higher square is generally rarely used in bead calculations.

Expanded

The following terms are commonly used in bead calculations:

1, gap: when the top and bottom of a file are off the beam, it is called a gap. Empty gear means that there is no record of this gear, or 0.

2, empty disk: the abacus of the gears are empty is, that the whole disk is not recorded, called empty disk.

3, the beads: by the beam counting beads, called the beads.

4, outside the bead: away from the beam does not count the bead, called the outer bead.

5, dial on: is the lower bead dial against the beam.

6, dial down: is the upper bead dial against the beam.

7. Toggle away: it means to toggle the upper or lower bead away from the beam.

8, this file: is about to dial the bead counting this file.

9, the front gear: is the gear before the gear, also known as the left gear (bit).

10, after the gear: refers to the gear after the gear, also known as the right gear (bit).

Baidu Encyclopedia - Abacus