Factors and multiples

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?

Yasmin and Zach have some bears to share. Which numbers of bears can they share so that there are none left over?

How many trains can you make which are the same length as Matt's and Katie's, using rods that are identical?

If you count from 1 to 20 and clap more loudly on the numbers in the two times table, as well as saying those numbers loudly, which numbers will be loud?

You have a set of the digits from 0 to 9. Can you arrange these in the five boxes to make two-digit numbers as close to the targets as possible?

Help share out the biscuits the children have made.

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?

This activity focuses on doubling multiples of five.