Arithmetic & Basics
Basic

Place Value

Each digit’s value depends on its position.

Formula

N=∑di×10iN = \sum d_i \times 10^{i}

Variables

d_iDigit
iPosition (from 0)

Example

342 = 3×100 + 4×10 + 2

Did You Know?

The place-value system with zero, developed in India, is considered one of humanity's greatest inventions — without it, arithmetic would be crippling.

place valuedecimalbasics