Dealing with calculations involving **time** and **timetable** is a basic but important part of mathematics. It is something which we should develop the skills to do quickly and accurately.

Do we know the correct way to write numbers using the 12-hour system and the 24-hour system. Let’s look at a few with the teacher and then complete the below exercise:

**Exercise**

Let’s complete exercise 17 from page 95 of the core textbook:

The answers are below:

**Time Intervals**

Do you have an effective way of finding how much time it takes from one time to the next. Let’s try a few with the teacher and see if we can get some good strategies.

**Exercise**

Let’s complete exercises 18 and 19 from pages 95 to 97 of the core textbook:

The answers are below: