Question

observa modelul de calcul apoi află produsele inmultirilor,

Answer 1

a) 36x15=(36x10)+(36x5)=360+180=540
38x29=(38x20)+(38x9)=760+342=1102
76x75=(76x70)+(76x5)=5320+380=5700

b)113x34=(113x30)+(113x4)=3390+452=3842
391x17=(391x10)+(391x7)=3910+2737=6647
206x29=(206x20)+(206x9)=4120+1854=5974

c)52x17=(52x10)+(52x7)=520+364=884
66x25=(66x20)+(66x5)=1320+330=1650
73x23=(73x20)+(73x3)=1460+219=1679