You have
to find ways of using 4 numbers to match a target number
exactly.
You don't
have to use all the numbers  but you can use each number only
once.
You can
add, subtract, multiply, divide and even put them
together.
Each level
will vary the number of signs you can use and the choice of digits
will be reduced to increase the difficulty.
Remember,
there is always more than one way to reach the target
number.
If you
want to see your workings, press the = button. If you want to give
up, press SEE ANSWER.
When you
think that you've got the correct answer, press
SUBMIT.
