Question

urenta ofer  10puncte plus vot si coroana calculati cat mai simplu 25348x 28515-25348x 2850= b 4839x 2583+7417x4839= c 1995x384+579x1995-962x1995 = d 3970x1984+1985x3970-2x1984=

Answer 1

b = 25348 × ( 28515 - 2850oare este inca un 0??) = 25348 × 25665 = 650556420

c = 4839 × (2583 + 7417) = 4839 × 10000 = 48390000

d = 1995 × ( 384 + 579 - 962) = 1995 × (963 - 962) = 1995

3970 × (1984 + 1985) - 2 × 1984 = 3970 × 3969 - 2 × 1984 pare ciudat... sigur este corect enuntul? 

Answer 2

25384x(28515-2850)=
25384x25665=651480360

4839x(2583+7417)=
4839x10000=48390000

1995x(384+579-962)=
1995x1=1995

1984x(3970-2)+1985x3970=
1984x3968+1985x3970=
7872512+7880450=15752962