小数加减乘除法简便运算练习题2页.docx

一、课堂练习0.1253.698 (2.50.25) 4 8.591010.3615.70.3613.7 5.641.288.725.640.63199 6048 7.730.52.2724.37994.37 10.138.673.867 9.95.58.63250.063250 9.310.1 3.990.12580.990.810.1190.19 (5.235.235.235.23) 250.251.250.6732 2.493.80.2496233.4143.410.25 54.80.30.33.91(6.448) 0.8 159.7 2.5(48) 1