It’s 10 to 1 (Official clock system).

00:50

It’s 10 to 1.

Correct answer

01:10

It’s 10 past 1.

Error: mirror minute hand about the vertical axis

10:12

It’s 12 past 10.

Error: confuse hour and minute hands and read as hours with ‘past’ or ‘to’

10:00

It’s 10 o’clock.

Error: confuse hour and minute hands