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Calculati :
1.2km : 4 -0.3(54)dam×11 = ?hm


Răspuns :

1.2km : 4 - 0.3(54)dam×11 =
0,3 km- 351/990 dam  x 11 = 
3 hm - 351/90 dam =
3hm - 0,39hm = 2,61 hm 

1km = 10hm 
351/90dam = 3,9 dam = 0,39 hm 

0,3(54)=354-3/990=351/990
1,2 km =12 hm
12:4=3
0,35454 dam =0,03545454
1.2km : 4 -(351/990)×11 =
1.2km : 4 -3861/990=
3861/990=3,9 dam
3,9 dam=0,39 hm
 3 -0.39 = 2,61

3hm - 0,39hm = 2,61 hm

1.2km : 4 -0.3(54)dam×11 =  = 2,61hm