欢迎来到天天文库
浏览记录
ID:60365904
大小:14.50 KB
页数:2页
时间:2020-12-05
《最新小数乘法简便运算练习题92144.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、小数乘法简便计算练习题小数乘法的简便计算的方法:1、分析算式的结构:(1)连乘,考虑乘法交换律和结合律;(2、)乘加或乘减,考虑乘法分配律。2、当结构不完整时,我们可以通过变式、拆分的方法,让算式变成符合运算律的形式,再进行简算。3、注意:口算要准确。0.25×8.5×412.5×0.96×0.80.25×0.73×44.36×12.5×80.25×16.2×41.25×2.5×323.2×0.25×12.50.25×36(1.25-0.125)×84.8×10.13.6×1020.39×1990.32×4033.65×
2、10.10.85×9.93.72×3.5+6.28×3.515.6×2.1-15.6×1.14.8×7.8+78×0.5256.5×99+56.57.09×10.8-0.8×7.091.87×9.9+0.1874.2×99+4.23.8×4.56+3.83×5.449.7×99+9.727.5×3.7-7.5×3.73.14×0.68+31.4×0.0327.2×0.2+2.4×1.45.4×11-5.47.74×(2.8-1.3)+1.5×2.263.9×2.7+3.9×7.312.7×9.9+1.272.3×16+2
3、.3×23+2.33.65×4.7-36.5×0.37101×0.87-0.91×8746×57+23×8610.7×16.1-15.1×10.77.6×0.8+0.2×7.61.28×8.6+0.72×8.610.6×0.35-9.6×0.358.9×1.010.65×10148×0.56+44×0.480.279×343+0.657×2790.264×519+264×0.4819.16×1.53-0.053×91.60.125×9612.5×10.8(20-4)×0.2545×21-50×2.145×1.58+5.5
4、×15.825×7.3×0.4
此文档下载收益归作者所有