Wb/simple/Abacus



Welcome to the Abacus Simple English Textbook!


 * Cover
 * Introduction
 * 1) Manual
 * 2) Appearance
 * 3) Rows
 * 4) Columns
 * 5) Earth beads
 * 6) Heavan beads
 * 7) Quick use
 * 8) Addition
 * 9) Subtraction
 * 10) Multiplication
 * 11) Division
 * 12) Expert use

Wb/simple/Category:Abacus

Using an Abacus