脱式计算,能简算的要简算.
①85×54÷18+745 ②3.4÷[(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+745 ②3.4÷[(1.25+0.45)×2] ③1080+270÷18﹣864
④7.54++2.46+ ⑤(2.4﹣)÷0.625+ ⑥98.9×99+98.9.