Question

4/10kg change into gram​

Answer 1

0.4 kilogram =

400 grams

Formula

Formula=multiply the mass value by 1000

Answer 2

$\frac{4}{10} kg \: = \: \frac{4}{10} \times 1000 \: gram \\ = 400 \: gram \:$

This question is solved by using 1kg =1000 gram .

I hope it was helpful... :)