Răspuns:
a) 10³ * (...) = 4000 => (...) = 4000:1000 = 4 ;
b) (...) = 53 * 10² =5300 ;
c) 10² * (...) = 70000 => (...) = 70000:100 = 700
d) (...) : 10 = 2⁵ => (...) = 2⁵*10=2⁵*2*5=5*2⁶
e) 100 : (...) = 2² => (...) = 100:4 = 25
f) (...) : 10³ = 9 => (...) = 9 * 1000 = 9000 .