plzz tolong ya no 17,18

1) cara :
13.000 mg = 13 g
160 cg = 1,6 g
70 dg = 7 g

13 g + 1,6 g + 7 g = 21,6 g

smoga bsa membantu :')

18. 10 th + 200 th + 24 th + 4 th
=210 th + 28 th
= 238 th
semoga membantu