the past ten of think is
0 hours, 45 minutes
The word 'ten' is a noun, it doesn't have a past tense.
It is nothing. But a quarter past ten is a quarter hour after ten: that is 10:15 in the morning or evening.
Quarter to 10.
Half past ten either in the morning or at night. So half an hour (30 minutes) before 11 o'clock. If on a 24 hour clock then 10:30 at night is known as 22:30
Ten times 11 is 110.
The past tense for eat is ate.
11
40 minutes
Twenty minutes.
a quarter past ten is 'dix heures et quart' in French.