(1)1.01>1,所以5.08×1.01>5.08;
(2)0.98<1,所以3.9÷0.98>3.9;
(3)3.2÷0.01=320;
3.2×100=320;
320=320,所以3.2÷0.01=3.2×100;
(4)7.05×10=70.5;
7.05÷0.1=70.5;
70.5=70.5,所以7.05÷10=7.05÷0.1.
故答案为:>,>,=,=.
(1)1.01>1,所以5.08×1.01>5.08;
(2)0.98<1,所以3.9÷0.98>3.9;
(3)3.2÷0.01=320;
3.2×100=320;
320=320,所以3.2÷0.01=3.2×100;
(4)7.05×10=70.5;
7.05÷0.1=70.5;
70.5=70.5,所以7.05÷10=7.05÷0.1.
故答案为:>,>,=,=.