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.
Making a Difference
1 out of 3
How many different differences can you make?
Cryptarithms
1 out of 3
Can you crack these cryptarithms?
Substitution Cipher
1 out of 3
Find the frequency distribution for ordinary English, and use it to help you crack the code.
Always a Multiple?
2 out of 3
Think of a two digit number, reverse the digits, and add the numbers together. Something special happens...
Peaches Today, Peaches Tomorrow...
2 out of 3
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?
Cuboids
3 out of 3
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?