1、小數的四則(混合)運算專項卷一、直接寫出得數。(每題1分，共10分)0.70.23 0.530.30.2×0.7 9.6÷43÷0.6 10.010.63÷0.9 0.13×0.44.80.8 1.4×3÷1.4×3二、用豎式計算，最后兩題要驗算。(每題3分，共24分)2.583.47 3.64.986.24.95 10025.967.5×0.24 4.12×3.58.84÷1.7 29.9÷0.26三、按要求計算。(每題3分，共12分)13.5×26.7 (保留一

2、位小數)3.08×0.43 (保留兩位小數)9.02÷1.3 (保留一位小數)4.34÷2.4 (保留兩位小數)四、脫式計算。(每題3分，共24分) 4.84.8×0.5 642.64×0.52.55÷1.70.59 3.2×5.611.4(3.120.9)÷(10.4) 2.5×(7.52.9)÷ 82015.54÷(3.7×2.8) 6.48÷(1.40.8)×0.9五、下面各題，怎樣簡便就怎樣算。(每題3分，共30分)1.90.568.10.44 2

3、7.85(3.42.15)1.25×9.6×0.083.45÷0.25÷431.542.6812.320.75×3.2×1.25 7.2÷4.53.25×1013.25 3.6×1026.6×7.80.66×22答案一、0.930.230.142.450.990.70.0525.69二、2.583.476.05 3.64.988.58 6.24.951.2510025.9674.04 7.5×0.241.84.12×3.514.42 8.84÷1.75.2

4、29.9÷0.26115三、13.5×26.7360.5 3.08×0.431.32 9.02÷1.36.94.34÷2.41.81 四、4.84.8×0.5 642.64×0.54.82.4 641.322.4 62.682.55÷1.70.59 3.2×5.611.41.50.59 17.9211.40.916.52 (3.120.9)÷(10.4) 2.5×(7.52.9)÷ 84.02÷0.6 2.5×10.4÷86.7 26÷

5、83.252015.54÷(3.7×2.8) 6.48÷(1.40.8)×0.92015.54÷10.36 6.48÷(0.6×0.9)201.5 6.48÷0.5418.5 12五、1.90.568.10.44 27.85(3.42.15)(1.98.1)(0.560.44) 27.852.153.4101 303.411 26.61.25×9.6×0.08 3.45÷0.25÷41.25×0.08×9.6 3.45÷(0.25×4)0.1×9.6 3.45÷10.96 3.4531.542.6812.32 0.75×3.2×1.2531.54(2.6812.32) (0.75×4)×(0.8×1.25)31.5415 3×116.54 37.2÷4.5 3.25×1013.257.2÷0.9÷53.25×(1011)8÷53.25×1001.63253.6×102 6.6×7.80.66×