When you **ADD,** things get bigger, longer or more.

**Example**

Jane has 12 pencils and Bill has 15 pencils.

How many do they have in total?

**Answer**

Add together 12 + 15.

Start at 12 and then add 10 and 5.

12 + 10 = 22

22 + 5 = 27

They have 27 pencils in total.

When you **SUBTRACT,** things get smaller, shorter, fewer or less.

**Example**

Jane has 27 marbles and gives 15 to her brother Bill.

How many does she have left?

**Answer**

Subtract 27 - 15.

Start at 27 and take away 10 then take away 5.

27 - 10 = 17

17 - 5 = 12

Jane has 12 left.