(Clasa a III) Calculează asociind convenabil factorii.

Răspuns:
1. 2x50x46= 100x46 = 4600
2. 25x4x23= 100x23= 2300
4. 25x2x2x17= 50x2x17= 100x17= 1700
Răspuns:
2×47×50=2×50=100×46=4600
25×23×4=25×4=100×23=2300
2×25×17×2=2×2=4×25=100×17=1700