Reading, writing and representing numbers

problem
Favourite

Number Lines in Disguise

Age

7 to 14

Challenge level

2 out of 3

Some of the numbers have fallen off Becky's number line. Can you figure out what they were?
problem
Favourite

Three Neighbours

Age

7 to 14

Challenge level

2 out of 3

Take three consecutive numbers and add them together. What do you notice?
problem
Favourite

Standard Index Form Matching

Age

14 to 16

Challenge level

1 out of 3

Can you match these calculations in Standard Index Form with their answers?
problem

Arrow Arithmetic 1

Age

14 to 16

Challenge level

1 out of 3

The first part of an investigation into how to represent numbers using geometric transformations that ultimately leads us to discover numbers not on the number line.
problem

Balance Power

Age

11 to 18

Challenge level

1 out of 3

Using balancing scales what is the least number of weights needed to weigh all integer masses from 1 to 1000? Placing some of the weights in the same pan as the object how many are needed?
problem

Stone Age Counting

Age

5 to 7

Challenge level

1 out of 3

What could these drawings, found in a cave in Spain, represent?
problem

Matching Numbers

Age

5 to 7

Challenge level

1 out of 3

Can you find different ways of showing the same number? Try this matching game and see!
game

Dotty Six for Two

Age

5 to 11

Challenge level

1 out of 3

Dotty Six game for an adult and child. Will you be the first to have three sixes in a straight line?
problem

A Romantic Riddle

Age

7 to 11

Challenge level

2 out of 3

Read this riddle and see if you can work out how the trees must be planted.
problem

Neighbourly Addition

Age

7 to 14

Challenge level

1 out of 3

I added together some of my neighbours' house numbers. Can you explain the patterns I noticed?