（瓯海区）用递等式计算． ①104.8﹣5×10.4÷ ②2496÷48+1620 ③0.125×32×25 ④42×71.7+28.3×42 ⑤16.8﹣+3.2﹣．
11.75- 1.7=
3.6×0.25×4=
÷=
- =
0.64÷0.08=
+3.2﹣
．+3.2﹣．
÷
=
- 
=
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