Ответ:\(\dfrac{12}{25}=\dfrac{48}{100}=0,48\).\(\dfrac78=\dfrac{875}{1000}=0,875\).\(\dfrac{145}{80}=1\dfrac{65}{80}=1\dfrac{13}{16}=1,8125\).Ответ: 1) 0,48; 2) 0,875; 3) 1,8125.