Răspuns:
a)
417×38+(583×11+583×27) =
417 x 38 + 583 x (11 + 27) =
417 x 38 + 583 x 38 =
38 x (417 + 583) =
38 x 1000 =
38000
b)
12x17+35×13+17×23 =
17 x (12 + 23) + 35 x 13 =
17 x 35 + 35 x 13 =
35 x (17 + 13) =
35 x 30 =
105
c)
(37×26+ 58×34) +21×26 =
26 x (37 + 2x34) + 21 x 26 =
26 x (37 + 68) + 21 x 26 =
26 x 104 + 21 x 26 =
26 x (104 + 21) =
26 x 125 =
3250
d)
((2doi sus)trei sus×74+102×10)+64×26 =
(4^3 x 74 + 102 x 10) + 64 x 26 =
64 x 74 + 102 x 10 + 64 x 26 =
64 x (74 + 26) + 102 x 10 =
64 x 100 + 102 x 10 =
10 x (640 + 102) =
10 x 742 =
7420
