התחבר/י באמצעות
- או -
\[\begin{aligned} 200+700=? \end{aligned}\]
\[\begin{aligned} 600-400=? \end{aligned}\]
\[\begin{aligned} 700+100=? \end{aligned}\]
\[\begin{aligned} 400+500=? \end{aligned}\]
\[\begin{aligned} 400-300=? \end{aligned}\]