1) 47•15 + 53•15 = 15(47 + 53) = 15•100 = 1500
2) 29•72 - 29•22 = 29(72 - 22) = 29•50 = 1450
3) 9,3•34 + 16•9,3 = 9,3(34 + 16) = 9,3•50 = 465
Ответ: 1) 1500, 2) 1450, 3) 465
1) 47•15 + 53•15 = 15(47 + 53) = 15•100 = 1500
2) 29•72 - 29•22 = 29(72 - 22) = 29•50 = 1450
3) 9,3•34 + 16•9,3 = 9,3(34 + 16) = 9,3•50 = 465
Ответ: 1) 1500, 2) 1450, 3) 465