Ответ: 1. 5/16=0.31252. 0.3125/0.125=2.53. 7/25=0.284. 1.456/0.28=5.25. 2.5-5.2=-2.76. 4/5=0.87. 4.5*0.8=3.68. -2.7-3.6=-6.3