Take this quiz to see how much you know about this topic already, then work through the guide and see if you can beat your score. Take a look at this number line. It shows 14 - 5 = 9. You can ...

Voiceover: In a world without maths,a land where people forgot ... That’s right, division time.Remember it’s just repeated subtraction, keep cool.Okay, fifteen doggy treats, how many grumpy ...