45.000 m - (20 dam + 2 hm +0.3 km)=…hm

45.000 = 45000 : 100 = 450
20 = 20 : 10 = 2
0.3 = 0.3 kali 10 = 30
450 - (2+2+30)
= 450 - 34
=416
Sorry kalau salah

45.000 m = 45.000 : 100 = 450 hm
20 dam = 20 : 10 = 2 hm
0,3 km = 0,3 x 10 = 3 hm

45.000 m - (20dam+2hm+0,3km) =..
450 hm - (2hm+2hm+3hm)
=450hm -7hm
= 443 hm.