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2.6乘1.9除以2.6能简便计算吗

2.6÷2.6*1.9x1.9=1.9x1.9=3.61

原式=(2/9)x(6/21)x(3/4) =1/21

12.26×7.26×2.32÷1.9÷1.4÷2.9 =1226×72.6×2.32÷19÷14÷29 =206497.632÷7714 =26又7714分之5933.632 =26又482125分之370852

7.1×2.6+2.6×2.9 =2.6x(7.1+2.9) =2.6x10 =26 祝天天向上。

(9分之2+6分之1-54分之5)×54 =9分之2×54+6分之1×54-54分之5×54 =12+9-5 =16

b151f8198618367a9485fe5325738bd4b31ce534 国

(1/7-1/9)乘3/6-2/3 =(9/63-7/63)x1/2-2/3 =2/63x1/2-2/3 =1/63-42/63 =-41/63

2.46*(2-0.1)=4.92-0.246=4.674

0.8-0.2×1.9÷7.6 =0.8-0.38÷7.6 =0.8-38÷76÷10 =0.8-0.05 =0.75

4/5减1/4的差乘十一分之六的积除以二十分之九能简便运算吗 (4/5-1/4)*6/11÷9/20 =11/20*6/11*20/9 =2/3 直接计算

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