10. Calculează. a) [(72 x 3-80): 2+2 x 124]: 4 =
b) 400+ 480: 4-[640:2 + 4x (20 + 12 + 18)] =
c) [12x (6+6:3)-5]: 6 =
d) 180:2+ [(50 x 2: 10+90)+10] - 25 x 4 =
e) [1 019+ (837:3+528:4)] x 2 =
f) [(136 x 4 + 56 x 6) x 5-2 552]: (900 - 3 x 293) =
g) 900-[(648:4+350:5): 2] x 3 =
i) [84+ (630:6x4)-(312:8 x 2)-298]: (8 x 864 108) =
h) 95-[25: (45:9) + (36:9 x 3-6)] + 786 : 6 =
j) 314-2x [(16+15) - (83-79)] =
k) 9 x (101 x 1+111: 1)-[85-7x (36:9+63: 9)] =
I) 324: [108: (21+54:9x5:30+ 45:9)] + 19 =
m) 101-300: [24-21: (42- 18:3-180: 12) + 196:2 5:28] = ​