Question

exercițiile 8 , 9 , 10 și 11
dau coroana

Answer 1

8.a)
3km=3000m=300000cm
2300dm= 230m= 23 dam
72hm=7200m= 7200000mm
230000cm= 230 dam= 23 hm
b. 8 dam
97060 m
89cm
540dam
9.
3m=30 dm
75cm>75mm
400km<40000hm
48hm>4800 dm
3×120 m> 4×97 dm
12m+24cm> 10m+28cm
69cm÷3= 20cm+30mm
16dm×4<1280dm÷10
10. Nu, nu diferă deoarece 80m=800dm=8000cm
11.a
9dam+60m= 150m
4hm+5dam=45dam
9hm+63dam=153000cm
75dam+130km=130750m
430m+60m=49dam
b.
72dam-140m=580m
9km-9hm=810dam
1870dam-21hm=166hm
630cm-120mm=6180mm
570m-1600dm=39000cm
21km-18dam=20820dm