93.6÷[(54.8+45.2)×0.06]
47.3-1.7×5-1.5
2013-1728÷32
直接写出得数。992+ 908= 0.48÷0.84= 1717÷17= ÷= 3.14×5= 11÷13= 5.6÷0.4= 15×= 2÷0.25×7= 4÷9×=
5.6x+4x=17.28
x+=
÷
= 3.14×5= 
= 2÷0.25×7= 4÷9×
=
x+
=
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