580 - 270 + 12 * 8 =

1) 580 - 270 + 12 * 8 = 580 - 270 + 96 = 310 + 96 = 406 2) (257 + 163) : 20 - 15 = 420 : 20 - 15 = 21 - 15 = 6 3) 600 - 72 : 36 * 40 = 600 - 2 * 40 = 600 - 80 = 520 4) (25 * 6 - 132) * 5 = (150 - 132) * 5 = 18 * 5 = 90 5) 99 : 3 + 17 * 4 = 33 + 68 = 101 6) 369 : 3 - 728 : 7 = 123 - 104 = 19 7) 98 : 49 * 60 - 74 = 2 * 60 - 74 = 120 - 74 = 46 8) (126 + 344) - (450 - 123) = 470 - 327 = 143 9) 108 + 34 * 3 - 45 = 108 + 102 - 45 = 210 - 45 = 165 10) 69 + 246 : 2 : 3 = 69 + 123 : 3 = 69 + 41 = 110 11) 0 * 65 + 99 - 19 = 0 + 99 - 19 = 80 12) 690 - (540 - 420) : 6 = 690 - 120 : 6 = 690 - 20 = 670 13) 360 : 4 - 16 * 5 = 90 - 80 = 10 14) 720 : 80 + 213 * 4 = 9 + 852 = 861 15) (910 - 869 : 1) * 7 = (910 - 869) * 7 = 41 * 7 = 287 16) 468 + 397 - 18 * 6 = 468 + 397 - 108 = 865 - 108 = 757 17) 800 - 96 : 32 * 254 = 800 - 3 * 254 = 800 - 762 = 38 18) 852 : 4 + (600 - 27) = 213 + 573 = 786