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1996x1995-996
----------------------
1000+1996x1994
=(1996-996)x1995
------------------------
(1994+1996)x1000
=1000x1994
------------------------
3990x1000
=1994000
------------------
3990000
=997
--------
1995
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1996 * 1995 - 996 / 1996 * 1994 + 1000
= 1996 * 1994 + ( 1996 - 996 ) / 1996 * 1994 + 1000
= 1996 * 1994 + 1000 / 1996 * 1994 + 1000
= 1
**** cho mink nha !
K qua la bang 1 nha bn !
1996 x 1995 - 996 / 1000 + 1996 x 1994 = 1
D/s : 1
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1996 x 1995 - 996 - 1000 - 1996 x 1994
= 1996 x (1995 - 1994) - (996 + 1000)
= 1996 - 1996
= 0
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1996 x 1995 - 996 - 1000 - 1996 x 1994
= 1996 x 1995 - (996 - 1000) - 1996 x 1994
= 1996 (1995 -1 - 1994)
= 0
Mk không biết gõ dấu phân số để ngăn cách
Ok xin lỗi nhak babe
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\(\frac{1996\cdot1995-996}{1000+1996\cdot1994}\)
\(=\frac{1996\cdot\left(1994+1\right)-996}{1000+1996\cdot1994}\)
\(=\frac{1996\cdot1994+1996-996}{1000+1996\cdot1994}\)
\(=\frac{1996\cdot1994+1000}{1000+1996\cdot1994}=1\)
Dạng toán: Tính nhanh ( vận dụng tính chất kết hợp phân phối giữa phép nhân và phép cộng)
Chúc em học tốt!
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\(\frac{1996\cdot1995-996}{1000+1996\cdot1994}\)
= \(\frac{1996\cdot1994+1996-996}{1000+1996\cdot1994}\)
= \(\frac{1996\cdot1994+1000}{1000+1996\cdot1994}=1\)
1996x2011-1000=4012956
996+2010x1996=4012956
\(\frac{1996x2011-1000}{996+2010x1996}\)
\(=\frac{\left(1996x2010+1996x1\right)-1000}{996+2010x1996}\)
\(=\frac{\left(1996x2010+1996\right)-1000}{996+2010x1996}\)
\(=\frac{1996x2010+1996-1000}{996+2010x1996}\)
\(=\frac{1996x2010+\left(1996-1000\right)}{996+2010x1996}\)
\(=\frac{1996x2010+996}{996+2010x1996}\)
\(=\frac{1996x2010+996}{2010x1996+996}\)
\(=\frac{1}{1}=1\)