התחבר/י באמצעות
- או -
\[\begin{aligned} 600-100=? \end{aligned}\]
\[\begin{aligned} 400+100=? \end{aligned}\]
\[\begin{aligned} 200-200=? \end{aligned}\]
\[\begin{aligned} 700+200=? \end{aligned}\]
\[\begin{aligned} 800-300=? \end{aligned}\]