question 1

if a room is 4 meters by 5 meters, how many square meters are there?

Question 2

If a Single roll of wall paper will cover 3 square meters, how many single rolls will it take to cover a wall 2 meters x 5 meters?

Question 3

Ifa customer buys 2 kg of nails at 16 cents a kg how much would the nails cost? (answer i got was 32cents plus canadian tax)

Question 4

if ceremic tiles are 203 mm x 203 mm, How many tiles would it take to cover an area 1 meters x 2 meters?

Im trying to help out a friend but I seem to be stuck i have not done anytype of math in 2 years so my memory is blank please help!!!

Thanks