Respuesta :

it’s 90 mate yeahhhhhhhh
lollol

Answer:

90

Step-by-step explanation:

9x10 is nine ten times or ten nine times

9+9+9+9+9+9+9+9+9+9=90

or

10+10+10+10+10+10+10+10+10=90

An easy trick for doing anything muliplied by 10 is to just add an extra 0 on the end of the first number!