Mental Calculation - 11/2

1 century = ____________ years

7 centuries 35 years = _______ years

654 years = _______ centuries _____ years

5 weeks - 2 weeks 6 days =

5 days = _____ hours

12 weeks = ______ days

74 days = ------weeks ____ days

108 months = _______years

86 months = ______ years ______ months

90 days = ______ weeks _____days