The value of the circle changes in each of the following problems. Can you discover its value in each problem?
Can you use the numbers on the dice to reach your end of the number line before your partner beats you?
What happens when you add the digits of a number then multiply the result by 2 and you keep doing this? You could try for different numbers and different rules.
How many solutions can you find to this sum? Each of the different letters stands for a different number.
We start with one yellow cube and build around it to make a 3x3x3 cube with red cubes. Then we build around that red cube with blue cubes and so on. How many cubes of each colour have we used?
