ELI5: Explain Like I'm 5

Chinese Zhusuan

Okay kiddo, so have you ever counted using your fingers or used an abacus to do math? Well, Chinese zhusuan is a type of math they use in China that is kind of like using an abacus.

Instead of just using fingers or a regular calculator, Chinese zhusuan uses a special counting tool called a suanpan. This tool has beads that slide back and forth on sticks in different columns.

Each column represents a different place value (kind of like one's place, ten's place, hundred's place, etc.) and the beads can be moved up or down to add or subtract numbers.

So when someone is doing Chinese zhusuan, they use their suanpan to count and do math problems like adding, subtracting, multiplying, and dividing.

It may seem confusing at first, but with practice and patience, Chinese zhusuan can be a helpful tool for doing math problems quickly and accurately. Cool, huh?