How does an abacus work?

Orient your abacus properly. Each column in the top row should have one or two beads per row, while each column in the bottom row should have four. When you start, all of the beads should be up in the top row, and down in the bottom row. read more

Some of these methods may work with non-natural numbers (numbers such as 1.5 and 3 ⁄ 4). Although today many use calculators and computers instead of abaci to calculate, abaci still remain in common use in some countries. read more

of 5. The beads which are pushed against the bar represent the number. The number on the abacus is 2,364. Thousands Hundreds Tens Ones 2 3 6 4 Adding on the abacus. Suppose you want to add 2,364+3,473. To do this put 2364 on the abacus. read more