378 in words

378 is written "three hundred seventy-eight". British English inserts "and" before the final part, giving "three hundred and seventy-eight"; American English leaves it out.

Where each word comes from

The same number, other ways

In words (US)

Three hundred seventy-eight

In words (UK)

Three hundred and seventy-eight

Ordinal

378th — three hundred seventy-eighth

Roman numeral

CCCLXXVIII

Digits

378

Writing it on a cheque

On a cheque the amount line reads "Three hundred and seventy-eight and 00/100" — or "Three hundred and seventy-eight only" in Indian and much of Commonwealth practice. The fraction or the word "only" exists to stop anyone appending digits after what you wrote. Draw a line through any space left over for the same reason.