8
punti
Livello 0
a)
$\dfrac{5·10^4-4·10^3}{2·10^3+3·10^2}$ =
= $\dfrac{(5-4)·10^{4+3}}{(2+3)·10^{3+2}}$ =
= $\dfrac{1·10^{7}}{5·10^{5}}$ =
= $\frac{1}{5}·10^{7-5}$ =
= $\dfrac{1}{5}·10^2$ =
= $\dfrac{1}{5}·100$ =
= $20$
57359
punti
Genius I
b)
$\dfrac{4·10^2+5·10}{2,6·10^2-3,5·10}$ =
= $\dfrac{4·100+50}{2,6·100-35}$ =
= $\dfrac{400+50}{260-35}$ =
= $\dfrac{450}{225}$ =
=$2$
57359
punti
Genius I
c)
$\dfrac{0,7·10^6-40·10^3}{80·10^3-0,2·10^5}$ =
= $\dfrac{700000-40000}{80000-20000}$ =
= $\dfrac{660000}{60000}$ =
= $11$
57359
punti
Genius I