Dicey operations
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
Legs eleven
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?
How many miles to go?
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?
Farey sequences
There are lots of ideas to explore in these sequences of ordered fractions.
Difference Sudoku
Use the differences to find the solution to this Sudoku.
Place your orders
Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?
Add to 200
By selecting digits for an addition grid, what targets can you make?
Forwards add backwards
What happens when you add a three digit number to its reverse?
Number lines in disguise
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?