1996 x1995-996
_____________
1000+1996x1994
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: \(1996\cdot1995-996-100-1996\cdot1994\)
\(=1996\left(1995-1994\right)-1996\)
\(=1996-1996=0\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có: \(1996\cdot1995-996-100-1996\cdot1994\)
\(=1996\left(1995-1994\right)-1996\)
\(=1996-1996=0\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1996 * 1995 - (996 + 1000 + 1996*1996)
= 1996*1995 - (1996 x (1 + 1996))
= 1996*(1995 - 1996 - 1)
= 1996* -2
=-3992
1996 * 1995 - (996 + 1000 + 1996*1996)
= 1996*1995 - (1996 x (1 + 1996))
= 1996*(1995 - 1996 - 1)
= 1996* -2
=-3992
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1996\cdot1995-996}{1000+1996\cdot1994}\)
\(=\frac{1996\cdot\left(1994+1\right)-996}{1000+1996\cdot1994}\)
\(=\frac{1996\cdot1994+1996-996}{1000+1996\cdot1994}\)
\(=\frac{1996\cdot1994+1000}{1000+1996\cdot1994}=1\)
Dạng toán: Tính nhanh ( vận dụng tính chất kết hợp phân phối giữa phép nhân và phép cộng)
Chúc em học tốt!
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1996.1995-996}{1000+1996.1994}=\frac{1996.\left(1994+1\right)-996}{1000+1996.1994}=\frac{1996.1994+1996-996}{1000+1996.1994}\)
\(=\frac{1996.1994+1000}{1000+1996.1994}=1\)
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![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{1996\times1995-996}{1000+1996\times1994}=\frac{1996\times1994+1996-996}{1996\times1994+1000}=\frac{1996\times1994+1000}{1996\times1994+1000}=1\)
1996 x 1995 - 996 1000 + 1996 x 1994
= 3982020 - 996 = 1000 + 3980024
= 3981024 = 3981024
2 kết quả bằng nhau!!!!!!
\(\dfrac{1996\times1995-996}{1000+1996\times1994}\\ =\dfrac{1996\times\left(1994+1\right)-996}{1000+1996\times1994}\\ =\dfrac{1996\times1994+1996-996}{1000+1996\times1994}\\ =\dfrac{1996\times1994+1000}{1000+1996\times1994}\\ =1\)