Fractions

problem

Doughnut

Age

7 to 11

Challenge level

1 out of 3

How can you cut a doughnut into 8 equal pieces with only three cuts of a knife?
problem

Red Balloons, Blue Balloons

Age

7 to 11

Challenge level

1 out of 3

Katie and Will have some balloons. Will's balloon burst at exactly the same size as Katie's at the beginning of a puff. How many puffs had Will done before his balloon burst?
problem

Dividing a Cake

Age

7 to 11

Challenge level

1 out of 3

Annie cut this numbered cake into 3 pieces with 3 cuts so that the numbers on each piece added to the same total. Where were the cuts and what fraction of the whole cake was each piece?
problem

Once Upon a Time

Age

7 to 11

Challenge level

1 out of 3

Can you work out the height of Baby Bear's chair and whose bed is whose if all the things the three bears have are in the same proportions?
problem

Snake Coils

Age

7 to 11

Challenge level

1 out of 3

This challenge asks you to imagine a snake coiling on itself.
problem

Pies

Age

7 to 11

Challenge level

2 out of 3

Grandma found her pie balanced on the scale with two weights and a quarter of a pie. So how heavy was each pie?
problem

Fun Time

Age

7 to 11

Challenge level

2 out of 3

On Saturday, Asha and Kishan's grandad took them to a theme park. Use the information to work out how long they were in the theme park.
problem

Light Blue - Dark Blue

Age

7 to 11

Challenge level

2 out of 3

Investigate the successive areas of light blue in these diagrams.
problem

Magic Matrix

Age

7 to 11

Challenge level

2 out of 3

Find out why these matrices are magic. Can you work out how they were made? Can you make your own Magic Matrix?
game

Chocolate Bars

Age

7 to 11

Challenge level

3 out of 3

This is a game to be played on your own or with friends. Imagine you are having a party. Each person takes it in turns to stand behind the chair where they will get the most chocolate.