# How can we work out times by bridging through the hour?

## What is bridging through 60?

Remember that there are **60** seconds in a minute and **60** minutes in an hour.

Bridging through 60 can help when you have to add times that are more than one whole minute (60 seconds) or one whole hour (60 minutes).

### Here's what to do.

Work out what you need to add to your first time to make **60**. Take this from your second time.

What do you have left? Add what is left to **60**. That's the end of your answer.

Remember that when you bridge through **60** you need to add **1** to the minutes if you are bridging through **60** seconds **or** add **1** to the hours if you are bridging through **60** minutes.

### Example

What time is it half an hour after **10:40am**?

Remember that half an hour is **30** minutes (half of **60** minutes).

Work out **40 + ? = 60**.

The answer is **20**.

Take this away from your second time. **30 - 20 = 10**.

So your answer ends with **10**.

Remember that you need to add 1 to the hours because you have bridged through **60** minutes.

**10:40am + 30minutes = 11:10am**