Twin Maths

< 3 + 5 > is the same than < 2 x 4 > ? < 4 + 2 > is the same than ? < 5 x 2 > is the same than < 100 : 10 > ? I bet that you have just answered to all and rightly. What if you have only 3 seconds to answer ? Try now and have fun to fast calculate!