Răspuns :
Răspuns:
5×99×2
99×(5×2)
99×10
990
4×78×25
(4×25)×78
100×78
7800
97×2×5
97×(2×5)
97×10
970
50×71×2
(50×2)×71
100×71
7100
5 × 99 × 2 = ( 5 × 2 ) × 99 = 10 × 99 = 990
4 × 78 × 25 = ( 4 × 25 ) × 78 = 100 × 78 = 7.800
97 × 2 × 5 = ( 2 × 5 ) × 97 = 10 × 97 = 970
50 × 71 × 2 = ( 50 × 2 ) × 71 = 100 × 71 = 7.100