You should know that there are:
12 months in 1 year
7 days in 1 week.
This means that there are:
6 months in ½ year
3 months in ¼ year
14 days in 2 weeks (1 fortnight).
You should also know that there are:
365 days in 1 year
366 days in 1 leap year.
Example 1
Jack takes 3 weeks to decorate his mum's dining room.
He gets paid £10 every day.
How much does he get paid to decorate the room.
Answer
1 week = 7 days.
3 weeks = 3 × 7 = 21 days.
21 × 10 = £210
Example 2
Annie stays at her job for 4¼ years.
How many months is this?
Answer
1 year = 12 months.
½ year = 6 months.
¼ year = 3 months.
4¼ years = 4 × 12 + 3 = 48 + 3 = 51 months.