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 house.

How many days is this?

 

Answer

1 week = 7 days.

3 weeks = 3 × 7 = 21 days.

 

 

Example 2

Annie stays at her job for 4½ years.

How many months is this?

 

Answer

1 year = 12 months.

½ year = 6 months.

 

4½ years = 4 × 12 + 6 = 48 + 6 = 54 months.