Addition and subtraction

problem

Add 3 Dice

Age

7 to 11

Challenge level

2 out of 3

Three dice are placed in a row. Find a way to turn each one so that the three numbers on top of the dice total the same as the three numbers on the front of the dice. Can you find all the ways to do this?
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

Rocco's Race

Age

7 to 11

Challenge level

2 out of 3

Rocco ran in a 200 m race for his class. Use the information to find out how many runners there were in the race and what Rocco's finishing position was.
problem

Throw a 100

Age

7 to 11

Challenge level

2 out of 3

Can you score 100 by throwing rings on this board? Is there more than way to do it?
problem

A-Magical Number Maze

Age

7 to 11

Challenge level

2 out of 3

This magic square has operations written in it, to make it into a maze. Start wherever you like, go through every cell and go out a total of 15!
problem

Buckets of Thinking

Age

7 to 11

Challenge level

2 out of 3

There are three buckets each of which holds a maximum of 5 litres. Use the clues to work out how much liquid there is in each bucket.
problem

Sept03 Sept03 Sept03

Age

7 to 11

Challenge level

2 out of 3

This number has 903 digits. What is the sum of all 903 digits?
problem

The Number Crunching Machine

Age

7 to 11

Challenge level

2 out of 3

Put a number at the top of the machine and collect a number at the bottom. What do you get? Which numbers get back to themselves?
problem

Magic Triangle

Age

7 to 11

Challenge level

2 out of 3

Place the digits 1 to 9 into the circles so that each side of the triangle adds to the same total.
problem

Adding Plus

Age

7 to 11

Challenge level

2 out of 3

Can you put plus signs in so this is true? 1 2 3 4 5 6 7 8 9 = 99 How many ways can you do it?