it would be appropriate to round a number when you are talking about people or animals. Ex. it fits 10 1/2 people. it will most likely fit 9-11 people.
You it is not appropriate to round with money.
Ex. If you owe someone $9.43 you don't just give them $9
True. If the amount displaced is more than the mass, it floats. If the amount is less than the mass, it will sink.
False. They are arranged in a structure called a crystal lattice
25 x 10^-5
= 0.00025
25 cm
= 0.00025 km