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# Just Jottings (11-14)

### Substitution Cipher

### Always a Multiple?

### Peaches Today, Peaches Tomorrow...

### Cuboids

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This collection of tasks is part of the activities for 11-14 year olds section of the Maths At Home feature. All you need to get started is a pencil and paper! The stars represent the challenge level, with three stars indicating the most challenging activities.

You may also wish to explore Just Jottings for 7-11 year olds, and Just Jottings for 14-16 year olds.

Age 11 to 14

Challenge Level

Find the frequency distribution for ordinary English, and use it to help you crack the code.

Age 11 to 14

Challenge Level

Think of a two digit number, reverse the digits, and add the numbers together. Something special happens...

Age 11 to 14

Challenge Level

A monkey with peaches, keeps a fraction of them each day, gives the rest away, and then eats one. How long can his peaches last?

Age 11 to 14

Challenge Level

Can you find a cuboid that has a surface area of exactly 100 square units. Is there more than one? Can you find them all?