CÁLCULO MENTAL / JUEGO 9 _ 8°

9 + (-9) =

(a)  

-5 + (-3) =

(a)  

 $\sqrt{25}=$  

(a)  

6 + 6 =

(a)  

-15 + (-15) =

(a)  

 $\sqrt{100}\ =$  

(a)  

 $\sqrt{49}\ =$  

(a)  

 $6^2$  

(a)  

4 + (-4) =

(a)  

 $2^2$  

(a)