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页数:9页
时间:2019-10-19
《小数的简便计算 超多》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、56.5×9.9+56.5515.6×13.1-15.6-15.6×2.14.8×7.8+78×0.524.2÷3.54.8×100.156.5×9.9+56.57.09×10.8-0.8×7.0918.76×9.9+18.763.52÷2.5÷0.4320÷1.25÷89.6÷0.8÷0.44.2×99+4.215.2÷0.25÷40.89×100.117.8÷(1.78×4)0.49÷1.41.25×2.5×323.65×10.13.83×4.56+3.83×5.449.7×99+9.73.14×0.68+
2、31.4×0.03227.5×3.7-7.5×3.78.54÷2.5÷0.40.65×1013.2×0.25×12.5(45.9-32.7)÷8÷0.1255.6÷1.25÷0.8÷2.5÷0.44.36×12.5×87.2×0.2+2.4×1.48.9×1.017.74×(2.8-1.3)+1.5×2.263.9×2.7+3.9×7.318-1.8÷0.125÷0.812.7×9.9+1.2721×(9.3-3.7)-5.65.4×11-5.44.5÷1.84.2÷3.563.4÷2.5÷0.44.9÷1.4
3、3.9÷(1.3×5)930÷0.6÷52.5×2.4小数简便计算练习一小数简便计算的方法:(整数的运算定律在小数中同样适用)1、加法交换律与结合律的运用。2、乘法交换律与结合律的运用。下面各题怎样算简便就怎样算。(一)小数加减法计算3.2+0.36+4.8+1.640.456+6.22+3.786.9+4.8+3.15.27+2.86-0.66+1.631.29+3.7+2.71+6.30.398+0.36+3.64 4.02+5.4+0.985.17-1.8-3.273.8-1.64-13.8-5.367.
4、14-0.53-2.4736.8-3.9-6.13.68+7.56-2.6835.6-1.8-15.6-7.266.86-8.66-1.349.6+4.8-3.647.8-7.45+8.8 7.85+2.34-0.85+4.6613.35-4.68+2.65(二)小数乘除法计算0.25×16.2×4320÷1.25÷83.9÷(1.3×5)2.7÷453.52÷2.5÷0.49.6÷0.8÷0.42.5×2.415÷(0.15×0.4)3.2×0.25×12.58.54÷2.5÷0.40.25×0.73×44.
5、6÷3.5小数简便计算练习二小数简便计算的方法:(整数的运算定律在小数中同样适用)1、加法交换律与结合律的运用。2、乘法交换律与结合律的运用。下面各题怎样算简便就怎样算。(一)小数加减法计算3.82+2.9+0.18+9.11.27+3.9+0.73+16.11.57+0.245+7.431.76+0.195+3.242.64+8.67+7.36+11.330.134+2.66+0.86615.02-6.8-1.028-2.45-1.5523.4-0.8-13.4-7.23.25+1.79-0.59+1.751
6、.23+3.4-0.23+6.67.5+4.9-6.513.75-(3.75+6.48)15.89+(6.75-5.89)12.7-(3.7+0.84)(二)小数乘除法计算0.8×(4.3×1.25)4.36×12.5×80.25×0.73×44.5÷1.8320÷1.25÷817.8÷(1.78×4)12.5×0.96×0.81.25×2.5×320.35×(1.25×2)×0.863.4÷2.5÷0.40.25×364.9÷1.4小数简便计算练习三小数简便计算的方法:(整数的运算定律在小数中同样适用)1、加
7、法交换律与结合律的运用。2、乘法交换律与结合律的运用。下面各题怎样算简便就怎样算。(一)小数加减法计算2.35+1.713+0.287+7.654.8+8.63+5.2+0.375.93+0.19+2.816.02+3.6+1.9867.34+21.56+2.66+8.440.74+19.16+9.26+0.823.9-4.1+6.1-5.914-7.32-2.6815.75+3.59-0.59+14.2525.48-(9.4-0.52)9.43-(6.28-1.57)146.5-(23+46.5)36.54-
8、1.76-4.543.07-0.38-1.6232+4.9-0.9(二)小数乘除法计算3.2×0.25×12.512.5×0.96×0.84.2÷3.50.49÷1.415.2÷0.25÷41.25×2.5×3218-1.8÷0.125÷0.8930÷0.6÷52.31×1.6×0.5×1.250.25×8.5×415÷0.2570÷285.6÷1.25÷0.8÷2.5÷0.40.12
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