ldcf.net
当前位置:首页 >> 76×1.9+7.6×81的简便算法 >>

76×1.9+7.6×81的简便算法

76×1.9+7.6×81的简便算法 76×1.9+7.6×81 =7.6*19+7.6*81 =7.6*(19+81) =7.6*100 =760

9/8-1/7+1/8-6/7=(9/8+1/8)-(1/7+6/7)=10/8-1=5/4-1=1/4。 使用结合律。

解:根据提取公因式的简便方法, 原式=4/7x6/9+4/7x1/9 =4/7x(6/9+1/9) =4/7x7/9 =4/9

9.6-7.6×1.1 =9.6-7.6x(1十0.1) =9.6-7.6-0.76 =2-0.76 =1.24

6.76×9点9+67点6×1用简便方法计算 6.76×9点9+67点6×1 =6.76*9.9+6.76*10 =6.76*(10+10-0.1) =6.76*20-6.76*0.1 =134.524

4.3×9.8+7.6×9.8-1.9×9.8 =9.8x(4.3+7.6-1.9) =9.8x10 =98

8.9×1.1+15.7×8.9+6.8×1.1 =(8.9+6.8)×1.1+15.7×8.9 =15.7×1.1+15.7×8.9 =15.7×10 =157

7.6÷5.4÷1.9×5.4 5。4先约去 7.6÷1.9=4 希望对你有帮助O(∩_∩)O~

用简算方法计算 0.78+7.8×1.9 =0.78+0.78x19 =0.78x(1+19) =0.78x20 =15.6

7.6×1.9-96.2÷7.4的简便运算 7.6×1.9-96.2÷7.4 =14.44-13 =1.44

网站首页 | 网站地图
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021。
内容来自网络,如有侵犯请联系客服。zhit325@qq.com