Play this game to learn about adding and subtracting positive and negative numbers

Imagine a very strange bank account where you are only allowed to do two things...

Investigate different ways of making £5 at Charlie's bank.

In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?

The idea of this game is to add or subtract the two numbers on the dice and cover the result on the grid, trying to get a line of three. Are there some numbers that are good to aim for?

Do you notice anything about the solutions when you add and/or subtract consecutive negative numbers?

Different combinations of the weights available allow you to make different totals. Which totals can you make?

There are nasty versions of this dice game but we'll start with the nice ones...

Who said that adding, subtracting, multiplying and dividing couldn't be fun?

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

Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?

This article suggests some ways of making sense of calculations involving positive and negative numbers.

Use the differences to find the solution to this Sudoku.

Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?

By selecting digits for an addition grid, what targets can you make?

What happens when you add a three digit number to its reverse?

A collection of short Stage 3 problems on place value, integers, ordering and rounding.

A collection of short Stage 4 problems on place value, ordering and rounding.

When is the next time that Brian's age will be the reverse of his father's age?

Sara makes a list of the whole numbers that do not contain any 9s. What is the 300th number on her list?