\(\frac{1998\times1996+1997+1995}{1996\times\left(1997-1995\right)}=\frac{1998\times1996+1996+1996}{1996\times2}=\frac{1996\times1999+1996}{1996\times2}\)
=\(\frac{1996\times2000}{1996.2}=\frac{2000}{2}=1000\)
\(\frac{1998\times1996+1997+1995}{1996\times\left(1997-1995\right)}=\frac{1998\times1996+1996+1996}{1996\times2}=\frac{1996\times1999+1996}{1996\times2}\)
=\(\frac{1996\times2000}{1996.2}=\frac{2000}{2}=1000\)
Tính nhanh \(\frac{1988\times1996+1997+1995}{1997\times1996-1995\times1996}\)
Tim A
\(A=\frac{1998\times1996+1997\times11+1985}{1997\times1996-1995\times1996}\)
Tính nhanh:
\(\dfrac{1988\times1996+1997+1985}{1997\times1996-1995\times1996}\)
a/\(\frac{1988\times1996+1997+1985}{1997\times1996-1995\times1996}\)
b/\(\frac{1978\times1979+1980.21+1985}{1980\times1979-1978\times1979}\)
c/\(\frac{2,43\times12300-24,3\times1230}{45\times20,1+55\times28,9+4,5+3,3-55\times5,37}\)
Giúp mk nha, giải ra đầy đủ thì mk sẽ like :-)))
Tính nhanh biểu thức sau:
A= 1998*1996+1997*11+1985/1997*1996-1995*1996
Tính nhanh :
1998 . 1996 + 1997 . 11 + 1985
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1997 .1996 - 1995 . 1996
Thực hiện các phép tính sau bằng cách nhanh nhất:
\(\frac{1998\cdot1996+1997\cdot11+1985}{1997\cdot1996-1995\cdot1996}\)
1998 x 1996 + 1997 + 1995
--------------------------------------
1997 x 1996 - 1995 x 1996
1998 x 1996 + 1997 + 1995
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1997 x 1996 - 1995 x 1996
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