Question

Calculeaza in doua moduri,dupa model.
Exemplu:11*(15+65)=11*80=880 si 11*(15+65)=11*15+11*65=165+715=880

d) (92+218)*8
e) 35*(59-35)
f) 43*(247-159)
g) (78-39)*14
h) (129-109)*456

Va rog mult de tot,dau coroana

Answer 1

d) (92+218)*8=310*8= 2480
Sau
(92+218)*8=92*8+218*8=736+1744=2400

e) 35*(59-35)= 35*24=840
Sau
35*(59-35)=35*59-35*35=2065-1225=840

Answer 2

d.) (92+918)×8=1010×8=8080 sau
(92×8)+(918×8)=
736+7344=8080

e.) 35×(59-35)= 35×24=840. sau
(35×59)-(35×35)=
2065-1225=840

f.) 43×(247-159)=43×88=3784. sau
(43×247)-(43×159)=
10.621-6837=3784


g.) (78-39)×14=39×14=546. sau
(78×14)-(39×14)=
1092-546=546


h.) (129-109)×456=20×456=9120. sau
(129×456)-(109×456)=
58.824-49.704=9120