Вычислите удобным способом.
1) 4 * 23 * 25 = (4 * ) * 23 = * 23 =
2) 2 * 417 * 5 = ( * ) * =
3) 4 * 46 * 5 =
4) 125 * 729 * 8 =
4 * 23 * 25 = (4 * 25) * 23 = 100 * 23 = 2300
2 * 417 * 5 = (2 * 5) * 417 = 10 * 417 = 4170
4 * 46 * 5 = (4 * 5) * 46 = 20 * 46 = 920
125 * 729 * 8 = (125 * 8) * 729 = 1000 * 729 = 729000