1) c.-> secunda
2) a) -> adevărat ; b -> adevărat ; c-> fals ( 1kg=10⁵cg)
3) 0,17km = 1,7 hm .
4)123mm²=0,0123dm²
5)0,075hl = 7,5 l
6) l = 5 m ; Arie = l² => Arie = 5²=25m².
7) L = 12dm
l = 3/4*12 = 9 dm
P = 2(L+l)
P = 2(12+9)
P = 2*21
P = 42 cm .
8) Arie faţă = 16cm² => l = √16 = 4cm .
V = l³=4³=16*3 = 64 cm³
9) 0,5m=5dm .
V = 5³=25*5= 125dm³=125l
