Question

transforme para grama . 40 Cg

Answer 1

Simples:

40cg ---> 0,4 g

Answer 2

g    dg     cg     mg
1     0        0

1 g ---------------100 cg
x ------------------ 40 cg
x. 100 = 40 cg
x = 40 / 100
x = 0,4 cg