71. (39 000 + 530 * 400) : 100 54 000 - 840 * 300 : 10 5264 * 7 + 30 4384 : 8 + 50

71. 1) (39000 + 530 * 400) / 100 = (39000 + 212000) / 100 = 251000 / 100 = 2510 2) 54000 - 840 * 300 / 10 = 54000 - 252000 / 10 = 54000 - 25200 = 28800 3) 5264 * 7 + 30 = 36848 + 30 = 36878 4) 4384 / 8 + 50 = 548 + 50 = 598