To simplify \( 1000^{2/3} \), we can start by expressing \( 1000 \) as \( 10^3 \):
\[ 1000^{2/3} = (10^3)^{2/3} \]
Using the power of a power property of exponents, we multiply the exponents:
\[ (10^3)^{2/3} = 10^{3 \cdot \frac{2}{3}} = 10^2 \]
Calculating \( 10^2 \):
\[ 10^2 = 100 \]
So, the correct simplification of \( 1000^{2/3} \) is \( 100 \).
Thus, Kali has the correct value.