Column subtraction is a way of subtracting larger numbers. It is called column subtraction, because you write one number underneath the other, using place value to sort the tens and ones in separate ...

Voiceover: In a world without maths,a land where people forgot, who will save the day? Mrs Barker: You know what I’ve got in here my lovelies, I’ve gotlots of yummy dog treats especially for you. Now, ...