one tenth times two tenths

2/10's because you multiply the denominator by the denominator and the numirator by the numirator wich is 1*2=2

and the denominators if the same would again stay the same giving you 2/10's

Hang on just a sec ILT

1/10 * 2/10 = 2/100   =  1/50

        When you MULTIPLY fractions the numerator AND denominator get multiplied ...alike or not.