Răspuns:
Explicație pas cu pas:
2.
5000 m = 50 hm = 500 dam = 1 km
5 000 m = ( 5000 : 100 ) hm = 50 hm, m < hm de 100 de ori
5 000 m = (5000 : 10 ) dam = 500 dam, m < dam de 10 ori
__________________________________________________
800 dam = 8 000 m = 8 km = 80 000 dm
800 dam = ( 800 × 10 ) m = 8 000 m, dam > m de 10 ori
800 dam = ( 800 : 10 ) hm = 80 hm, dam < hm de 10 ori
800 dam = ( 800 : 100) km = 8 km, dam < km de 100 de ori
800 dam = ( 800 × 100 ) dm = 80 000 dm, dam > dm de 100 de ori
_______________________________________________________
780 000 m = 7 800 000 dm = 78 000 dam = 780 km
780 000 m = ( 780 000 × 10 ) dm = 7 800 000 dm, m > dm de 10 ori
780 000 m = ( 780 000 : 10 ) dam = 78 000 dam, m < dam de 10 ori
780 000 m = ( 780 000 : 1 000 ) km = 780 km , m < km de 1 000 de ori
780 000 m = ( 780 000 : 100) hm = 7 800 hm, m < hm de 100 de ori
_____________________________________________________
12 hm = 1 200 m = 120 dam = 12 000 dm
12 hm = ( 12 × 100 ) m = 1 200 m, hm > m de 100 de ori
12 hm = ( 12 × 10 ) dam = 120 dam hm > dam de 10 ori
12 hm = ( 12 × 1000 ) dm = 12 000 dm, hm > dm de 1 000 de ori