25×99 + 25 = 25×(100 - 1) + 25 = 25×100 - 25 + 25 = 2500 - 25 + 25 = 2500Ответ: 2500
41×50 - 50 = 50×41 - 50 = 50×40 + 50 - 50 = 2000 + 50 - 50 = 2000Ответ: 2000
25×99 + 25 = 25×(100 - 1) + 25 = 25×100 - 25 + 25 = 2500 - 25 + 25 = 2500
Ответ: 2500
41×50 - 50 = 50×41 - 50 = 50×40 + 50 - 50 = 2000 + 50 - 50 = 2000
Ответ: 2000