Comparing and ordering numbers

problem

In Order

Age

7 to 11

Challenge level

Can you rank these quantities in order? You may need to find out extra information or perform some experiments to justify your rankings.
game

Dicey Operations in Line for Two

Age

7 to 11

Challenge level

Dicey Operations for an adult and child. Can you get close to 1000 than your partner?
problem

True or False?

Age

7 to 11

Challenge level

Without doing lots of calculations, can you decide which of these number sentences are true? How do you know?
problem

Ordering Journeys

Age

7 to 11

Challenge level

How would you put these journey lengths in order?
problem

Worms

Age

7 to 11

Challenge level

Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?
problem

The Magic Number and the Hepta-Tree

Age

7 to 11

Challenge level

Find the exact difference between the largest ball and the smallest ball on the Hepta Tree and then use this to work out the MAGIC NUMBER!
problem

A Numbered Route

Age

7 to 11

Challenge level

Can you draw a continuous line through 16 numbers on this grid so that the total of the numbers you pass through is as high as possible?
problem

Sets of Four Numbers

Age

7 to 11

Challenge level

There are ten children in Becky's group. Can you find a set of numbers for each of them? Are there any other sets?
problem

Truth or Lie

Age

7 to 11

Challenge level

Take a look at the video of this trick. Can you perform it yourself? Why is this maths and not magic?
problem

Rod Fractions

Age

7 to 14

Challenge level

Pick two rods of different colours. Given an unlimited supply of rods of each of the two colours, how can we work out what fraction the shorter rod is of the longer one?