Question

400dm+1700dm=...m;160hm+140hm=...km;120dam+1880dam=...km;175dam+9825dm=...hm
963cm+9037cm=..dam
14000dam-4000dam=..km;
17901dam-41dam=hm
9hm-7hm=...dm
66dm-29dm=...mm
3dam+197dam=..cm
15hm+14hm=..dm
94cm+15cm=...mm
56dm+43dm=..mm
72km+14km=...dam
114hm-86hm=28000...
1001dam+999dam=20....
208....-108....=10km
17....+182....=199000cm
48....-30...=18mm

Answer 1

400 dm + 1 700 dm =2 100 dm =210 m

160 hm + 140 hm =300 hm = 30 km

120 dam + 1 880 dam = 2 000 dam = 20 km

175 dam + 9 825 dm =  17,5 hm + 9,825 hm = 27,325 hm 
175 dam = ( 175 : 10 ) hm = 17,5 hm 
9 825 dm = ( 9 825 : 1 000 ) hm = 9,825 hm 

963 cm + 9 037 cm = 10 000 cm = 10 dam

14 000 dam - 4 000 dam = 10 000 dam = 100 km 

17 901 dam - 41 dam = 17 860 dam = 1 786  hm

9 hm - 7 hm = 2 hm = 2 000 dm;  hm > dm de 1 000 de ori 

66 dm - 29 dm =  37 dm = 3 700 mm

3 dam + 197 dam = 200 dam = 200 000  cm

15 hm + 14 hm =  29 hm = 29 000 dm

94 cm + 15 cm =  109  cm = 1 090 mm

56 dm+43 dm = 99 dm = 9 900 mm

72 km + 14 km = 86 km = 8 600 dam

114 hm - 86 hm = 28 hm = 28 000 dm 

1 001 dam + 999 dam =  2 000 dam =  20 km

208 hm - 108 hm = 100 hm =10 km

17 dam + 182 dam  = 199 dam  =199 000 cm

48 mm - 30 mm =18 mm