Preposition multiply to itself or by itself

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Preposition multiply to itself or by itself

redcamarocruiser

Preposition multiply to itself or by itself

I saw a math video in which the teacher said multiply a number TO itself.

I would have said multiply a number BY itself.

Is "To itself" British usage? (I say add a number to itself).

18 Jun 2020

Hi redcam! You are right. You multiply a number by itself, not to itself.

18 Jun 2020

redcamarocruiser

Thank you, Lynne!

18 Jun 2020