小数加减法的简便计算练习题1、用简便方法计算585+189+215 248+146+154 768274126 5.85+1.89+2.15 24.8+14.6+15.4 5.851.750.25 2、火眼金睛辩对错(1)12.451.350.65 (2)21.32(6.32+8.3)=12.45(1.35+0.65) =21.326.32+8.3 =12.45-2 =15+8.3=10.45 =23.3 3、用简便方法计算27.3+73.2+72.7 42.522.177.83 3.8+1.37+6.2+12.63 (15.28+28.99)+20.72