Use these four dominoes to make a square that has the same number of dots on each side. Put operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number. Katie had a pack of 20 cards numbered from 1 to Yet more school maths from long ago-interest and percentages. How about the shaded numbers in the other squares? Odd Squares Age 7 to 11 Challenge Level: Which is quicker, counting up to 30 in ones or counting up to in tens?

If you know the numbers that come out, what multiplication might be going on in the box? Put operations signs between the numbers 3 4 5 6 to make the highest possible number and lowest possible number. How many different ways can you do it? Pick any ten numbers from the bags above so that their total is Roll two red dice and a green dice. Can you find different ways of doing it?

Lolla bought a balloon at the circus. How much money might he have? How many different ways can you do it?

# Addition and Subtraction KS2 :

Can you make square numbers by adding two prime numbers together? The value of the circle changes in each of the following problems. How many ounces of bread a day must each man in the garrison be allowed, to hold afdition Four bags contain a large number of 1s, 3s, 5s and 7s. How could he have put them into three piles so solviing the total in each pile was 15? How many different trains can you make?

Finding Fifteen Age 7 to 11 Challenge Level: The sum of the numbers inside it is written on each envelope.

# Place Value KS2 :

Can you go through this maze so that the numbers you pass add to exactly ? Can you put the numbers in the V shape so that both ‘arms’ have the same total? Can you work out the arrangement of the digits in the square so that the given products are correct? Each child in Class 3 took four numbers out of the bag. probllem

Register for our mailing list. Mystery Matrix Age 7 to 11 Challenge Level: Can you use the nrrich sentences to work out what they are? A magician took a suit of thirteen cards and held them in his hand face down.

Who had made the highest even number? How many times do they flash together during a whole minute?

## Addition and Subtraction KS2

How many extra pebbles are added each time? Five Coins Age 7 to 11 Challenge Level: He could then pay any sum of money from 1p to 15p without opening any bag.

addtion Age 5 to 7 Reasoning and Convincing at KS1 The tasks in this collection can be used to encourage children to convince others of their reasoning, using ‘because’ statements. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

## Place Value KS2

What is the largest ‘ribbon square’ you can make? Are you surprised by the results?

Multiplication Squares Age 7 to 11 Challenge Level: Prison Cells Age 7 to 11 Challenge Level: Choose two of the numbers to multiply or divide, then mark your answer on the number line. Amy has a box containing domino pieces but she does not think it is a complete set.

Four of these clues are needed to find the chosen number on this grid and four are true but do nothing to help in finding the number. Register for our mailing list. Always, Sometimes or Never?