### There are 22 results

Broad Topics >

Numbers and the Number System > Positive-negative numbers

##### Age 7 to 14 Challenge Level:

An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

##### Age 11 to 14 Challenge Level:

Different combinations of the weights available allow you to make different totals. Which totals can you make?

##### Age 11 to 14 Challenge Level:

Do you notice anything about the solutions when you add and/or
subtract consecutive negative numbers?

##### Age 7 to 14 Challenge Level:

First Connect Three game for an adult and child. Use the dice numbers and either addition or subtraction to get three numbers in a straight line.

##### Age 5 to 11 Challenge Level:

In this problem, we're investigating the number of steps we would climb up or down to get out of or into the swimming pool. How could you number the steps below the water?

##### Age 11 to 14 Challenge Level:

Imagine a very strange bank account where you are only allowed to do two things...

##### Age 11 to 14 Challenge Level:

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

##### Age 7 to 14 Challenge Level:

The idea of this game is to add or subtract the two numbers on the dice and cover the result on the grid, trying to get a line of three. Are there some numbers that are good to aim for?

##### Age 11 to 14 Challenge Level:

Investigate different ways of making £5 at Charlie's bank.

##### Age 11 to 14

A brief history of negative numbers throughout the ages

##### Age 7 to 11 Challenge Level:

The picture shows a lighthouse and many underwater creatures. If you know the markings on the lighthouse are 1m apart, can you work out the distances between some of the different creatures?

##### Age 11 to 14 Challenge Level:

Play this game to learn about adding and subtracting positive and negative numbers

##### Age 5 to 11 Challenge Level:

Number problems at primary level to work on with others.

##### Age 7 to 11 Challenge Level:

In this game, you can add, subtract, multiply or divide the numbers on the dice. Which will you do so that you get to the end of the number line first?

##### Age 11 to 16 Challenge Level:

Can you be the first to complete a row of three?

##### Age 11 to 14

How can we help students make sense of addition and subtraction of negative numbers?

##### Age 11 to 14

This article suggests some ways of making sense of calculations involving positive and negative numbers.

##### Age 11 to 14 Challenge Level:

In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?

##### Age 11 to 14 Challenge Level:

What is the smallest number of answers you need to reveal in order
to work out the missing headers?

##### Age 5 to 11

In this article for teachers, Liz Woodham describes resources on
NRICH that can help primary-aged children get to grips with
negative numbers.

##### Age 11 to 18

This article -useful for teachers and learners - gives a short
account of the history of negative numbers.

##### Age 11 to 16 Challenge Level:

The classic vector racing game.