Question

Folosind asociativitatea si comutativitatea inmultirii, efectuati:

a) 2×37×5;
b) 2×25×17×5×4;
c) 250×2×4×579×5;

Va rog frumos repede!!!

Answer 1

a)   2 × 37 × 5 = ( 2 × 5 ) × 37 = 10 × 37 = 370  

b)   2 × 25 × 17 × 5 × 4 = 17 × ( 2 × 5 ) × ( 25 × 4 ) = 17 × 10 × 100 = 17 000

c)   250 × 2 × 4 × 579 × 5 = 579 × ( 250 × 4 ) × ( 2 × 5 ) = 579 × 1 000 × 10 =

= 5 790 000