四年级数学下小数加减混合简便运算10页.doc

54.4(1.3311.6) 48.669.1626.34 5.2324.654.35 2.19(34.817.35) 16.6212.8513.15 28.17(24.2746.83) 41.661.6219.38 19.2613.7518.74 35.5341.971.4771.6686.3513.35 77.0443.5240.04 86.7162.161.16 83.6791.9365.67 98.2391.6452.64 50.762.2835.76 81.685.2131.21 98.6216.31.62 85.6497.1483.14 0.38(12.6224.09) 15.44(39.5642.8) 18.746.2738.3 32.9835.9360.07 32.23(13.5461.77) 66.41(