5.96×1.013.96 3.6÷0.243.6 3.45÷1.23.45÷1.5
6.7×0.980.98×6.7 2.5×0.92.5÷0.9 3.76×0.83.76÷0.8
①6.28÷0.8÷5
②6.4+0.74+3.7+0.26
③2.5×(40-4)
④(8+0.8)×12.5
⑤33.5-3.5×6
⑥17÷[(1.2+0.8)×5]