3,5km-20hm+35dam =.........m

3,5 km = 3500 m
20 hm = 2000 m
35 dam = 350 m
jadi = 3500 - 2000+350 = 1850 m

》3,5 km - 20hm + 35dm
》3,5(1000) - 20(100) + 35(10)
》3500 - 2000 + 350
》1.850 m

śémøğá męmbāñţű ^_^