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9.6-7.6×1.1 怎样简便计算

9.6-7.6x1.1 =9.6-7.6×(1+0.1) =9.6-7.6-0.76 =2-0.76 =1.24

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

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

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

33.3x6.7+99.9×1.1 =33.3x6.7+33.3×3.3 =33.3×(6.7+3.3) =33.3×10 =333

1×1/3)+3×1/5)+5×1/7加7×1/9简便算法计算 1×1/3)+3×1/5)+5×1/7加7×1/9 =1/2*(1-1/3+1/3-1/5+1/5-1/7+1/7-1/9) =1/2*8/9 =4/9

9×7/15+7/15÷1/6 =9 x 7/15 + 7/15 x 6 =(9 + 6) x 7/15 =15 x 7/15 =7 希望我的回答对您有帮助,满意请采纳,谢谢。

5/1x6/1+6/1x7/1+7/1x8/1+8/1x9/1+9/1x10/1 =5X6+6X7+7X8+8X9+9X10 =6X12+7X8+9X18 =6X(12+27)+7X8 =6X39+7X8 =234+56 =290

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