+（
﹣
）÷
2450﹣450÷18×25
﹣
．相关试题
．脱式计算，能简算的要简算．
①85×54÷18+745②3.4÷[（1.25+0.45）×2]③1080+270÷18﹣864
④7.54+
+2.46+
⑤（2.4﹣
）÷0.625+
⑥98.9×99+98.9．
脱式计算，能简算的要简算．
①85×54÷18+745②3.4÷[（1.25+0.45）×2]③1080+270÷18﹣864
④7.54++2.46+⑤（2.4﹣）÷0.625+⑥98.9×99+98.9．
﹣1.25+4.4﹣
4.5×6.6+3.4×4.5．
÷
+
×
③5﹣5×
+
+
）×8+
⑥
×[1÷（
﹣
）]．
．
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