2 out of 3
Can you find pairs of differently sized windows that cost the same?
3 out of 3
Can you find a way of counting the spheres in these arrangements?
1 out of 3
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
1 out of 3
The Number Jumbler can always work out your chosen symbol. Can you work out how?
2 out of 3
In this 100 square, what is the sum of the numbers that are diagonally opposite each other?
1 out of 3
My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?
1 out of 3
Crosses can be drawn on number grids of various sizes. What do you notice when you add opposite ends?
1 out of 3
A country has decided to have just two different coins. Which totals can be made? Is there a largest total that cannot be made? How do you know?
1 out of 3
Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?
1 out of 3
Create some shapes by combining two or more rectangles. What can you say about the areas and perimeters of the shapes you can make?
