Answer:
Cien
Explanation:
Cero (0) + Cien (100) = 100
1a) it's one o'clock
1b) it's quarter past one.
1c) it's half past one.
2a)it's three o'clock
2b)its quarter past three
2c) it's half past three
3a) it's quarter past seven
3b) it's quarter to seven.
3c) it's quarter to eight
4a)it's ten past ten.
4b) it's ten to eleven.
4c) it's ten to ten.
