Annie and Ben are playing a game with a calculator. What was Annie's secret number?
These caterpillars have 16 parts. What different shapes do they make if each part lies in the small squares of a 4 by 4 square?
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?
This problem challenges you to find out how many odd numbers there are between pairs of numbers. Can you find a pair of numbers that has four odds between them?
Use the information about Sally and her brother to find out how many children there are in the Brown family.
Here are shadows of some 3D shapes. What shapes could have made them?
Frances and Rishi were given a bag of lollies. They shared them out evenly and had one left over. How many lollies could there have been in the bag?
If there are 3 squares in the ring, can you place three different numbers in them so that their differences are odd? Try with different numbers of squares around the ring. What do you notice?
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
