Addition and subtraction

game

Sumo

Age

7 to 11

Challenge level

1 out of 3

A number game requiring a strategy.
problem

True or False?

Age

7 to 11

Challenge level

1 out of 3

Without doing lots of calculations, can you decide which of these number sentences are true? How do you know?
problem

Mathdoku

Age

7 to 11

Challenge level

1 out of 3

Complete the Mathdoku grid using the clues. Can you convince us that the number you have chosen for each square has to be correct?
problem

Five More Coins

Age

7 to 11

Challenge level

1 out of 3

Could Ben have any amount of money between 5p and £2 in his pocket if he has five coins?
$Build it \Up more$

problem

Build It Up More

Age

7 to 11

Challenge level

2 out of 3

This task follows on from Build it Up and takes the ideas into three dimensions!
problem

Diagonal in a Spiral

Age

7 to 11

Challenge level

2 out of 3

Investigate the totals you get when adding numbers in threes on the diagonal of this pattern.
problem

What Distance?

Age

7 to 11

Challenge level

2 out of 3

Can you use addition and subtraction to answer these questions about real-life distances?
game

Asteroid Blast

Age

7 to 11

Challenge level

2 out of 3

A game for 2 people. Use your skills of addition, subtraction, multiplication and division to blast the asteroids.
problem

Worms

Age

7 to 11

Challenge level

2 out of 3

Place this "worm" on the 100 square and find the total of the four squares it covers. Keeping its head in the same place, what other totals can you make?
problem

Dice and Spinner Numbers

Age

7 to 11

Challenge level

2 out of 3

If you had any number of ordinary dice, what are the possible ways of making their totals 6? What would the product of the dice be each time?