679 has 6 hundreds, 7 tens and 9 ones. Work out what each picture is representing, first. A - The part-whole model shows 500 + 20 + 3. That equals 523! B - There are 5 hundreds, 3 tens and 2 ones ...

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.