Working systematically

problem
Fair exchange

Age

5 to 7

Challenge level

In your bank, you have three types of coins. The number of spots shows how much they are worth. Can you choose coins to exchange with the groups given to make the same total?
problem
The puzzling sweet shop

Age

5 to 11

Challenge level

There were cola bottles for 2p, mini eggs for 3p, marshmallow twists for 5p and lollipops for 7p in the sweet shop. What could each of the children buy with their money?
problem
Snails' trails

Age

7 to 11

Challenge level

Alice and Brian are snails who live on a wall and can only travel along the cracks. Alice wants to go to see Brian. How far is the shortest route along the cracks? Is there more than one way to go?
problem
Two by one

Age

7 to 11

Challenge level

An activity making various patterns with 2 x 1 rectangular tiles.
problem
Hubble, bubble

Age

7 to 11

Challenge level

Winifred Wytsh bought a box each of jelly babies, milk jelly bears, yellow jelly bees and jelly belly beans. In how many different ways could she make a jolly jelly feast with 32 legs?
problem
Number detective

Age

5 to 11

Challenge level

Follow the clues to find the mystery number.
problem
Delia's routes

Age

7 to 11

Challenge level

A little mouse called Delia lives in a hole in the bottom of a tree.....How many days will it be before Delia has to take the same route again?
problem
How old?

Age

7 to 11

Challenge level

Cherri, Saxon, Mel and Paul are friends. They are all different ages. Can you find out the age of each friend using the information?
problem
On target

Age

7 to 11

Challenge level

You have 5 darts and your target score is 44. How many different ways could you score 44?
problem
The school trip

Age

5 to 7

Challenge level

Lorenzie was packing his bag for a school trip. He packed four shirts and three pairs of pants. "I will be able to have a different outfit each day", he said. How many days will Lorenzie be away?