These math puzzles test your brain and critical-thinking skills ... and no fractions or negative numbers are involved. Answer: Which number should replace the question mark? Answer: 9 Which ...

In Quiz 1 Ralph and Matrix are off to the fun fair…where they take a ride on the ghost train. Before taking part in the quiz make sure you have a pencil or pen and a piece of paper ready for ...

Before taking part in the quiz make sure you have a pencil or pen and a piece of paper ready for writing down your answers - better still, print off our answer sheet below. Use your mental maths ...