Question

Estimeaza produsele prin rotunjirea factorilor,pentru a descoperi rapid rezultatele gresite:23×15=345,25×11=275,78×45=10344,35×94=8230, 54×23=5242,62×99=10008,13×17=221,48×37=1776

Answer 1

23x15=345
25x11=275
78x45=3510
35x94=3290
54x23=1242
62x99=6138
13x17=221
48x37=1776