Ответ: 44888 + (69999 + 10001) = 114888; 20200 + (9999 + 4701) =34900;
3322 + (18856 + 1544) =23722
А) 25/100, 2/5, 20/50, 1/2, 6/10,7/8
б)2/5, 1/2, 12/20, 3/4, 20/25
в)1/2,2/3,8/12,12/15,5/6
-21646:674-4456+(-66)≈ -4554.12
70:5 + 17*4 = 14 + 68 = 82