251750

251742

\(\frac{2006\cdot125+1000}{126\cdot2005-888}=\frac{2005\cdot125+125+1000}{125\cdot2005+2005-888}=\frac{2005\cdot125+1125}{125\cdot2005+1117}\)

=> không tính nhanh được

\(\frac{125875}{125871}\)

\(\frac{\text{2006 x 125 + 1000}}{\text{ 2005 x 126 - 880}}=???\)

Trả lời :

\(\frac{\text{2006 x 125 + 1000}}{\text{2005 x 126 - 880}}=\frac{\text{251750}}{\text{251750}}=1\)

Chúc bạn học tốt !

0 đáp án

Lahh dsr uẹđb bh s

\(\dfrac{2006.125+1000}{126.2006-1006}\)

\(=\)\(\dfrac{2006.125+1000}{(125+1).2006-1006}\)

\(=\)\(\dfrac{2006.125+1000}{125.2006+1.2006-1006}\)

\(=\)\(\dfrac{2006.125+1000}{125.2006+2006-1006}\)

\(=\)\(\dfrac{2006.125+1000}{125.2006+1000}\)

\(=\) 1

2006 x 125 + 1000/126 x 2006 - 1006

= 2006 . 125 + 1000/125 . 2006 + 1 .2006 - 1006

= 2006 . 125 + 100/125 . 2006 + 1000

= 1

2006 x 125 + 1000/126 x 2006 - 1006

= 2006 x 125 + 1000/125 x 2006 + 1 x 2006 - 1006

= 2006 x 125 + 1000/125 x 2006 + 1000

= 1

a,  ( 32,5 + 28,3 X 2,7 - 108,91 ) X 2006
= (32,5 + 76,41 - 108,91)X 2006
= (108,91 - 108,91) X 2006
= 0 X 2006
= 0

b, \(\frac{2006.125+1000}{126.2005-880}=\frac{2005.125+125+1000}{125.2005+2005-880}=\frac{2005.125+1125}{125.2005+1125}=1\)

\(\frac{2006\cdot125+100}{126\cdot2005-800}=\frac{250850}{251830}=\frac{25085}{25183}\)

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