a)4×8×16×25×625=8000.000.
sau:
2+^2+^3+^4×5^2+^4=8000.000
b)16×256×125×15.625=19.531.250.000
c)2×4×8×9×15.625=9.000.000
d)2+^1+^2+^3+^4×5+^2+^3+^4:10^10=0,008
e)64×16×32×125^2×625^2×5:10^11=10000
f)128×128:0,001953125×3125:625=128^2:0,00195×3125:625=16384:0,00195×3125:625=42010256