Вычислите произведение удобным способом: а) 36*25 б) 25*12 в) 75*24 г) 150*42 Образец: 1) 25*24 = 25 * (4*6) = (25*4) * 6 = 100*6 = 600 2) 75*8 = (25*3) * (2*4) = (25*4) * (2*3) = 100*6 = 600

а) 36 * 25 = (5 * 6) * (6 * 5) = 30 * 30 = 900.

36 = 6 * 6.

25 = 5 * 5.

б) 25 * 12 = (5 * 2) * (5 * 6) = 10 * 30 = 300.

25 = 5 * 5.

12 = 6 * 2.

в) 75 * 24 = (5 * 4) * (5 * 6) * 3 = 20 * 30 * 3 = 1800.

75 = 5 * 3 * 5.

24 = 4 * 6.

г) 150 * 42 = (5 * 6) * (10 * 7) * 3 = 30 * 70 * 3 = 6300.

150 = 5 * 3 * 10.

42 = 6 * 7.