**Take two numbers that are 'next door neighbours' when you count. **These are called consecutive numbers.

Add them together.

Take a few more pairs of two consecutive numbers and add them together.

What is the same about all the answers?

Can you explain what is happening?

**Now take three consecutive numbers and add them together.**

What do you notice this time?

Take some more sets of three consecutive numbers and add them together.

Can you explain what is happening?

**Explore what happens when you take sets of four consecutive numbers, five consecutive numbers, six, seven ... and add them together.**

Can you explain what is happening each time?

Can you predict what will happen when you take sets of

- 99 consecutive numbers?
- 100 consecutive numbers?

## Comments

### adding 2 consecutive numbers

when you add 2 consecutive numbers you wll always get an odd number such as 1 + 2 = 3 and 4+5=9

### adding

when you add those type of numbers they are always odd

### consecutive numbers

when you add those numbers they are odd.

### consecutive numbers

when you add them they are always even