简便计算.810÷15÷6= 20﹣8.12﹣1.88= 27.54﹣(17.54﹣3.6)=
①12.5×3.7×0.8 ②4.6×2.3+7.7×4.6 ③3.6+(5.7+3.8)÷0.5 ④3.6÷0.4﹣1.5×3 ⑤0.1÷0.2÷0.4 ⑥80.3﹣5.6×1.7.
脱式计算,能用简算的要简算. 1.3×0.75×4 1.08÷1.8×1.2 50.4×1.9﹣1.8 0.82×0.25+1.18×0.25.
怎样简便就怎样算. 0.125×4.78×802.8×3.6+1.4×2.8(0.4+40)×2.5 78.7﹣17.7×3.618÷[0.3×(8﹣6.5)]12.7+12.5+0.5.
用你喜欢的方法计算. 0.6+0.94﹣0.2084.85×1.25×8(64﹣22.4÷1.4)×1.2 18.3﹣6.25﹣3.752.8×3.6+1.4×2.86.6÷〔14.5﹣(1.7+1.8)〕
直接写得数: 0.002×100=8÷100=0÷100+72=25×19×4= 0.83﹣0.23=4.8+0.12=5﹣2.7=3.6+7.65+6.4=