cast out nines

English

Verb

cast out nines (third-person singular simple present casts out nines, present participle casting out nines, simple past and past participle cast out nines)

1. (arithmetic) To apply a procedure for verifying whether an arithmetic operation is probably correct or certainly incorrect using modulo characteristics of the digit 9.

Translations

verification of an arithmetic operation

• Catalan: prova del nou f
• Dutch: negenproef
• French: preuve par neuf (fr) f
• German: Neunerprobe f
• Italian: prova del nove f
• Portuguese: fazer a prova dos nove
• Spanish: prueba del nueve f

Further reading

• Casting out nines on Wikipedia.Wikipedia