Work out expanded form instantly with clear inputs, formula shown and shareable results.
Expanded form writes a number as the sum of what each digit contributes. Zero digits contribute nothing, so they are omitted from the sum.
Expanded form
5407 = 5000 + 400 + 7 = 5×10³ + 4×10² + 7×10⁰
5000 + 400 + 7. The zero in the tens place contributes nothing.
It makes the base-ten structure explicit, which is the bridge to scientific notation and to other bases.