More information is needed as to what a "3 way LBS" is.
lead would be almost twice bigger. Lead has a density of 11.34 g/ cm3 gold is denser at 19.32 g/cm3
It's not a very big difference but an iPad 3 is way better.
The difference between 7 and 3 is 4.
the difference between a number and 3 is
The difference between -1 and 3 is 4.
It is 5.8 minus 3 = 2.8
Zero. In general, the difference between any number and itself is zero.
-1
One gram. Or to put it another way, 4g is 33 1/3% more than 3 g.
The difference between -3 and 0 is 3 because your not taking anything away from negative 3 and your not adding anything to It either.
-15
3