# Negative numbers

## Home learning focus

Understand the position of negative numbers on a number line, as well as some contexts in which they are used (for example temperatures or money).

This lesson includes:

one video

one quiz

one worksheet

# Learn

First let's recap the basics of negative numbers. Jerry and Albert discover negative numbers with this clips from KS2 Maths.

### What are positive and negative numbers?

Any number above zero is a **positive** number. Positive numbers are written with no sign or a + sign in front of them. They are counted up from zero to the right on a number line.

Any number below zero is a **negative** number. Negative numbers are always written with a - sign in front of them. They are counted down from zero to the left on a number line.

Always look at the sign in front of a number to see if it is positive or negative.

Zero, 0, is neither positive nor negative.

### Adding and subtracting positive and negative numbers

To add and subtract numbers always begin counting from zero.

When **adding** positive numbers, count to the **right**.

When **subtracting** positive numbers, count to the **left**.

### Adding with negative numbers

Example:

What is -4 + 5?

To add -4 and 5, draw the starting number on a number line and count to the **right** when **adding** numbers.

So, -4 + 5 = 1

### Subtracting with negative numbers

Example:

What is -2 - 2?

To subtract 2 from -2, start at -2 on a number line, then count to the **left** when **subtracting** numbers.

# Practise

There are lots of fun ways to practise what you've learned about negative numbers. Here are a few you could try.

## Activity 1

**Negative numbers quiz**

Quickly test your knowledge of negative numbers with this five question quiz.

## Activity 2

**Negative numbers puzzle**

Take a look at this worksheet from Twinkl involving a negative number reasoning puzzle.

# There's more to learn

Have a look at these other resources around the BBC and the web.