Multiplication and division

problem

X Is 5 Squares

Age

7 to 11

Challenge level

2 out of 3

Can you arrange 5 different digits (from 0 - 9) in the cross in the way described?
problem

How Old?

Age

7 to 11

Challenge level

2 out of 3

Cherri, Saxon, Mel and Paul are friends. They are all different ages. Can you find out the age of each friend using the information?
problem

Book Codes

Age

7 to 11

Challenge level

2 out of 3

Look on the back of any modern book and you will find an ISBN code. Take this code and calculate this sum in the way shown. Can you see what the answers always have in common?
problem

How Many Eggs?

Age

7 to 11

Challenge level

2 out of 3

Peter, Melanie, Amil and Jack received a total of 38 chocolate eggs. Use the information to work out how many eggs each person had.
problem

Special 24

Age

7 to 11

Challenge level

2 out of 3

Find another number that is one short of a square number and when you double it and add 1, the result is also a square number.
problem

What Two ...?

Age

7 to 11

Challenge level

2 out of 3

56 406 is the product of two consecutive numbers. What are these two numbers?
problem

Zargon Glasses

Age

7 to 11

Challenge level

2 out of 3

Zumf makes spectacles for the residents of the planet Zargon, who have either 3 eyes or 4 eyes. How many lenses will Zumf need to make all the different orders for 9 families?
problem

Arranging the Tables

Age

7 to 11

Challenge level

2 out of 3

There are 44 people coming to a dinner party. There are 15 square tables that seat 4 people. Find a way to seat the 44 people using all 15 tables, with no empty places.
problem

Next Number

Age

7 to 11

Challenge level

2 out of 3

Find the next number in this pattern: 3, 7, 19, 55 ...
problem

Pies

Age

7 to 11

Challenge level

2 out of 3

Grandma found her pie balanced on the scale with two weights and a quarter of a pie. So how heavy was each pie?