Răspuns:
Ex 1. 1 5/16
2. 0.35
3. 1 cm
Ex 2
2. 9.8
3. D
Ex 3
1. 60 si 12
2. 2.6
3. A 13.5 dam
Explicatie
Ex 1.15:12=0,41
5:16=0.31
2. 7:20=0,35
3. 0.25*4=1 cm
Ex2
2. 3,5*2,8=9.8
3. In fiecare doua puncte o dreapta = cu 8
Ex 3
1.a-b=48
A=5b
5b-b=48
4b=48
B=48:4=12
A=5*12=60
60-12=48
2.(0,5+2,4+5,28+2,22):4=2.6
