This collection is one of our Primary Curriculum collections - tasks that are grouped by topic.

problem

### Watch the clock

During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?

problem

### How many Times?

On a digital 24 hour clock, at certain times, all the digits are consecutive. How many times like this are there between midnight and 7 a.m.?

problem

### Wonky Watches

Stuart's watch loses two minutes every hour. Adam's watch gains one minute every hour. Use the information to work out what time (the real time) they arrived at the airport.

problem

### The time is ...

Can you put these mixed-up times in order? You could arrange them in a circle.

problem

### 5 on the clock

On a digital clock showing 24 hour time, over a whole day, how many times does a 5 appear? Is it the same number for a 12 hour clock over a whole day?

problem

### Two Clocks

These clocks have only one hand, but can you work out what time they are showing from the information?

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*ou may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.*