The weights of four different insects are given below.

Insect A: 2.19*10^-4 g;
Insect B: 5.00*10^-3 g;
Insect C: 9.0*10^-2 g;
Insect D: 1.50*10^-3 g

What is the order of these insects from heaviest to lightest?

1 answer

Use 10^-4 as a common exponent. Then they are, as multiples of 10^-4:

2.19
50.0
900.0
15.0

Not too hard to order them now, eh?