Mighty powers...

and the helpful square root

A scary mathematics adventure by Ricardo Arquero

Help Johnny and his friends to escape from the evil enchanted castle where Morgana, the whole numbers witch, has imprisoned them.

Johnny is in a dungeon that is locked with a rusty padlock. He needs to solve a sum to know the code that opens the padlock. Help him!

3 4· 5−22· 103

7312: 3 =______________________

Now, he tries to free his friends in the next cell, but what is the code for their padlock?

3 ·1522 ·35· 842 :718:229 =_______________________

They are in a dismal corridor. Spiders spin a cobweb to block the way at a speed of 20 square centimetres per second. Knowing that the corridor section is a square with sides 2 meters long, how much time do they have to go through before the corridor is completely blocked?

They have ____________________________________

Finally they reach the witch's den. She is preparing a poisonous potion made of exponential viruses. The number of viruses double each minute. At the moment there are 5 exponential viruses, but, how many viruses will there be after ten minutes?

There will be _________________________ viruses after 10 minutes.

And after half an hour?

There will be __________________________ viruses after half an hour.

They have to solve a frightening square root to stop the growing of the viruses and defeat Morgana. Are you brave enough to find the solution? Be quick!

379780085169 =________________________________

Congratulations! Johnny and his friends are now out of the castle.THANKS FOR HELPING!