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This task requires learners to explain and help others, asking and answering questions.
This challenge is about finding the difference between numbers which have the same tens digit.
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?
Use five steps to count forwards or backwards in 1s or 10s to get to 50. What strategies did you use?
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?
This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box?
Throw the dice and decide whether to double or halve the number. Will you be the first to reach the target?
This investigates one particular property of number by looking closely at an example of adding two odd numbers together.
What do you notice about these squares of numbers? What is the same? What is different?
What two-digit numbers can you make with these two dice? What can't you make?
Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own?
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
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?
Choose four of the numbers from 1 to 9 to put in the squares so that the differences between joined squares are odd.
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?
This is a game for two players. Can you find out how to be the first to get to 12 o'clock?
This problem looks at how one example of your choice can show something about the general structure of multiplication.
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?
How would you create the largest possible two-digit even number from the digit I've given you and one of your choice?
Try out this number trick. What happens with different starting numbers? What do you notice?
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?
Here are some arrangements of circles. How many circles would I need to make the next size up for each? Can you create your own arrangement and investigate the number of circles it needs?
In how many different ways can you break up a stick of seven interlocking cubes? Now try with a stick of eight cubes and a stick of six cubes. What do you notice?
Sweets are given out to party-goers in a particular way. Investigate the total number of sweets received by people sitting in different positions.
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
Are these statements relating to odd and even numbers always true, sometimes true or never true?