Question

ex 3 le rezolvati dupa examplu va rog

Answer 1

5 x 99 x 2 = (5 x 2) x 99 = 10 x 99 = 990

4 x 78 x 25 = ( 4 x 25 ) × 78 = 100 × 78 = 7800

97 x 2 x 5 = ( 97 x 5 ) x 2 = 485 x 2 = 970

50 x 71 x 2 = ( 50 x 2 ) x 71 = 100 × 71 = 7100