It is nothing. But a quarter past ten is a quarter hour after ten: that is 10:15 in the morning or evening.
The word 'ten' is a noun, it doesn't have a past tense.
Held
lead / led / ledHe has led the team for ten years. (past participle)
Absolutely nothing of importance
it's fifteen past ten.
Not so sure about one qauter, but one quarter of six is 1.5
25
Ten past ten, is another way of saying ten minutes past ten o'clock, it can be am (morning) or pm (evening).
the past ten of think is
it means ten minutes past 1 o'clock
The word 'ten' is a noun, it doesn't have a past tense.
Quarter to 10.
The past tense for eat is ate.
40 minutes
one forth is one qauter eg. one forth of 100 is 25.
a quarter past ten is 'dix heures et quart' in French.
Twenty minutes.