👤
Daniela184
a fost răspuns

Grupează termenii pentru a calcula rapid :125+259+167+175+141+133, 78+96+84+54+72+66,3420+1095+2580+2005 , 2300+2200+1700+2800 .

Răspuns :

Danna10
1) 
(125+175)+(259+141)+(167+133)=300+400+300=1000
2)
(78+72)+(96+54)+(84+66)=150+160+150=460
3)
(3420+2580)+(1095+2005)=6000+3100=9100
4)
(2300+1700)+(2200+2800)=4000+5000=9000

Alte intrebari