Răspuns:
1. 50:(9-1-9:3)
50:(9-1-3)
50:5=10
2. 100+30-(3+48)
100+30-51=79
3. (5x8+14:7):(3×3-14:7)
(40+2):(9-2)
42:7=6
4. (2+3×4)×(56:7-8)
(2+12-4)×(8-8)
10×0=0
5. (9+5):7+2
14:7+2
2+2=4
6. 10×5+(10-2):8
50+8:8
50+1=51
7. (9×7-6:3)-(81-8×8)
(63-2)-(81-64)
61-17=44
8. 73-4×3+(53-24:8×6)
73-12+(53-18)
73-12+35=96
9. (14+8:8):5+5-(29-3:3+3):4
(14+1):5+5-(29-1):4
15:5+5-28:4
3+5-7=1
10. (88-13+6×4:8)-(66-12-7×4)
(88-13+3)-(66-12-28)
78-26=52
11. 48+(73-65)×6+(24+24:3)
48+8×6+(24+8)
48+48+32=128