This activity is all about numbers.

Remember that the number **sixty-five** is written 65.

**6** is the **tens digit** and **5** is the **ones digit.**

So the number 65 has **6 tens (60)** and **5 ones**.

How many **tens** and how many **ones** are in the number **59**?

There are **5 tens (50)** and **9 ones**.

What number do we make if we have **4 tens** and **3 ones**?

It makes the number **43 **(forty-three)

When we count up in **2s**, we add two to the previous number.

4 6 8 10 12 14 ...

What number would come next? 14 + 2 = **16**.

The sequence above includes only **even **numbers.

When we count up in** 3s,** we add three to the previous number.

6 9 12 15 18 21 ...

What number would come next? 21 + 3 = 24

The sequence above is actually part of the three times table.

In a list of numbers, the **smallest **is the one we would say **first **when we are counting up.

The **largest **is the one we would say **last**.

These numbers have all been jumbled up out of order: **45, 34, 25, 54, 13 **

**13 **is the smallest and **54** is the largest.

If you arranged them all in order they would go: 13, 25, 34, 45, 54

You need to look at the number in the tens column first when arranging them in order. The largest number (54) has 5 tens and the smallest number (13) has only 1 ten.

Have a look at these numbers: 71, 69, 12, 43, 55

If we arrange them in order, we get: 12, 43, 55, 69, 71. So 12 was the smallest number and 71 was the largest.

Are you ready to have a go at some questions now?