16 18 20 afla jumătatea prin desene

Răspuns :

/-------/ |16
/-------/ |

16:2=8(un segment)

A = 8
B = 8

8+8 = 16


/----/ |
/----/ |18
18:2 = 9

A = 9
B = 9
9+9 = 18

/----/|20
/----/|

20 : 2 = 10

A = 10
B = 10

10+ 10 = 20

Sper ca te-am ajutat!