It’s 6 to 10 (Official clock system).

09:54

It’s 6 to 10.

Correct answer

09:55

It’s 5 to 10.

Error: 1 minute later

08:50

It’s 10 to 9.

Error: read minutes starting from hour markings and adding minutes

11:45

It’s a quarter to 12.

Error: confuse hour and minute hands