Вариант 9. 1) 50,343648 - 7; 2) 7,5 * 3,003096; 3) 22,64542 : 1,75; 4) 794,18575 : 38; 5) 79,57705 - 17,57705; 6) 41,76754 + 8,23246; 7) 9,64396 - 4,9743; 8) 8,601851 + 716,307351; 9) 0,00008 * 0,3; 10) 7 : 0,000875; 11) 994,52445 + 8,584287; 12) 320 * 2,003125.

Решение варианта 9: 1) 50,343648 - 7 = 43,343648 2) 7,5 * 3,003096 = 22,52322 3) 22,64542 : 1,75 = 12,94024 4) 794,18575 : 38 = 20,899625 5) 79,57705 - 17,57705 = 62 6) 41,76754 + 8,23246 = 50 7) 9,64396 - 4,9743 = 4,66966 8) 8,601851 + 716,307351 = 724,909202 9) 0,00008 * 0,3 = 0,000024 10) 7 : 0,000875 = 7000000 : 875 = 8000 11) 994,52445 + 8,584287 = 1003,108737 12) 320 * 2,003125 = 640,9999999999999 (Округленно 641)