game
Favourite
Dicey operations
Age
7 to 14
Challenge level
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
problem
Legs eleven
Age
11 to 14
Challenge level
Take any four digit number. Move the first digit to the end and move the rest along. Now add your two numbers. Did you get a multiple of 11?
problem
How many miles to go?
Age
11 to 14
Challenge level
How many more miles must the car travel before the numbers on the milometer and the trip meter contain the same digits in the same order?
problem
Farey sequences
Age
11 to 14
Challenge level
There are lots of ideas to explore in these sequences of ordered fractions.
problem
Difference Sudoku
Age
14 to 16
Challenge level
Use the differences to find the solution to this Sudoku.
problem
Place your orders
Age
11 to 14
Challenge level
Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?
problem
Add to 200
Age
11 to 14
Challenge level
By selecting digits for an addition grid, what targets can you make?
problem
Forwards add backwards
Age
11 to 14
Challenge level
What happens when you add a three digit number to its reverse?
problem
Number lines in disguise
Age
7 to 14
Challenge level
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?