2.1-0.07= 5.5×0.2= 0.99÷9= 0.37+6.3=
3.08÷0.1= 61.4÷1000×10= 19.8-0.85-9.15=
0.54÷0.09= 12.5×0.008= 78.6×20÷78.6×20=
①0.25×6.4×1.25
②(9.8-4.6)÷0.13×2.5
③5.6×2.9-5.6+8.1×5.6
④27.08×10.1
⑤10.7-2.9×0.2÷0.58
⑥101÷[(100.1-99.09)×10]