In Quiz 5 Ralph and Matrix are loading and unloading sacks at the mail depot.
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 muscle to note down your answer to each of Ralph's questions during the timed pauses. Then be ready to mark your sheet when Matrix gives the answers. At the end total up your score to see if you're a Mental Maths Mastermind!
The quiz lasts about 15 minutes and has three clearly marked sections:
- Beat the clock! A quick fire round with questions coming thick and fast.
- Problem solving. Join Ralph and Matrix solving maths at the mail depot.
- Number juggling. Applying addition, subtraction, multiplication or division to three numbers to come up with Matrix's target number.
More Maths Challenge quizzes
Quiz 4: The Great British dash. video
Calculating travel times on a dash around England, Scotland and Wales
Quiz 6: At the seaside. video
Calculating how many points have been scored at the seaside arcade
Quiz 7: Let's go to the zoo! video
Ralph and Matrix take part in a school visit to the zoo
