Voiceover: In a world without maths,a land where people forgot, who will save the day? Narrator: Whether multiplying or dividing, skills like counting in twos, fives and tens are vitally important.

Find out what multiples are and how to sort multiples of 2 and 5. Doubling numbers Learn how to make doubles using ten frames, addition and multiplication. Counting in twos, threes, fives and tens ...