# Resources tagged with: Number bases

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### There are 13 results

Broad Topics > The Number System and Place Value > Number bases

### Fingers and Hands

##### Age 7 to 11Challenge Level

How would you count the number of fingers in these pictures?

### Alien Counting

##### Age 7 to 11Challenge Level

Investigate the different ways these aliens count in this challenge. You could start by thinking about how each of them would write our number 7.

### Sometimes We Lose Things

##### Age 7 to 11Challenge Level

Well now, what would happen if we lost all the nines in our number system? Have a go at writing the numbers out in this way and have a look at the multiplications table.

### Back to the Planet of Vuvv

##### Age 11 to 14Challenge Level

There are two forms of counting on Vuvv - Zios count in base 3 and Zepts count in base 7. One day four of these creatures, two Zios and two Zepts, sat on the summit of a hill to count the legs of. . . .

### Base Puzzle

##### Age 11 to 14Challenge Level

This investigation is about happy numbers in the World of the Octopus where all numbers are written in base 8 .Octi the octopus counts.

### Happy Octopus

##### Age 11 to 14Challenge Level

This investigation is about happy numbers in the World of the Octopus where all numbers are written in base 8 ... Find all the fixed points and cycles for the happy number sequences in base 8.

### Basically

##### Age 11 to 14Challenge Level

The number 3723(in base 10) is written as 123 in another base. What is that base?

### It Must Be 2000

##### Age 7 to 11Challenge Level

Here are many ideas for you to investigate - all linked with the number 2000.

### Nim-like Games

##### Age 7 to 16Challenge Level

A collection of games on the NIM theme

##### Age 11 to 18

We are used to writing numbers in base ten, using 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. Eg. 75 means 7 tens and five units. This article explains how numbers can be written in any number base.

### Oh for the Mathematics of Yesteryear

##### Age 11 to 14Challenge Level

A garrison of 600 men has just enough bread ... but, with the news that the enemy was planning an attack... How many ounces of bread a day must each man in the garrison be allowed, to hold out 45. . . .

### A Story about Absolutely Nothing

##### Age 7 to 18

This article for the young and old talks about the origins of our number system and the important role zero has to play in it.

### Balance Power

##### Age 11 to 18Challenge Level

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?