Working systematically

problem

ABC

Age

7 to 11

Challenge level

In the multiplication calculation, some of the digits have been replaced by letters and others by asterisks. Can you reconstruct the original multiplication?
problem

Family Tree

Age

7 to 11

Challenge level

Use the clues to find out who's who in the family, to fill in the family tree and to find out which of the family members are mathematicians and which are not.
problem

Palindromic Date

Age

7 to 11

Challenge level

What is the date in February 2002 where the 8 digits are palindromic if the date is written in the British way?
problem

Difference

Age

7 to 11

Challenge level

Place the numbers 1 to 10 in the circles so that each number is the difference between the two numbers just below it.
problem

Count the Trapeziums

Age

7 to 11

Challenge level

How many trapeziums, of various sizes, are hidden in this picture?
problem

Shunting Puzzle

Age

7 to 11

Challenge level

Can you shunt the trucks so that the Cattle truck and the Sheep truck change places and the Engine is back on the main line?
problem

Single Track

Age

7 to 11

Challenge level

What is the best way to shunt these carriages so that each train can continue its journey?
problem

Make Pairs

Age

7 to 11

Challenge level

Put 10 counters in a row. Find a way to arrange the counters into five pairs, evenly spaced in a row, in just 5 moves, using the rules.
problem

Pouring the Punch Drink

Age

7 to 11

Challenge level

There are 4 jugs which hold 9 litres, 7 litres, 4 litres and 2 litres. Find a way to pour 9 litres of drink from one jug to another until you are left with exactly 3 litres in three of the jugs.
problem

Calendar Cubes

Age

7 to 11

Challenge level

Make a pair of cubes that can be moved to show all the days of the month from the 1st to the 31st.