1996*1995-996
1000+1996*1994
Tính nhanh :1996 * 1995 - 1996 - 1996 * 1994 =?
Trả lời
1996.1995-1996-1996.1994
=1996.(1995-1994)-1996
=1996.1-1996
=0
(1996-1996)×(1996-1995)×1994
=0×1×1994
=0
Trả lời:
1996x1995-1996-1996x1994
=1996x(1995-1994)-1996
=1996x1-1996
=1996-1996
=0
Tính nhanh : 1996 * 1995 _ 1996 _ 1996 *1994 = ?
\(1996.1995-1996.1994\)
\(=1996.\left(1995-1994\right)\)
\(=1996.1\)
\(=1996\)
1996 x 1995 - 1996 x 1994 = 1996 x ( 1995 - 1994 ) = 1996 x 1 = 1996
\(1996\times1995-1996\times1994=1996\times\left(1995-1994\right)\)
\(=1996\times1\)
\(=1996\)
1995^3+1/1995^2-1994
1996^2-1/1996^3+199
Tính diện tích miếng bìa màu xanh như hình bên 20cm 25cm
1996 x 1995 - 1 / 1994 * 1996 + 1995 = ?
1996 x 1995 - 996
------------------------- : 7/5
1000 + 1996 x 1994
Tính nhanh :
a) 399 x 45 + 55 x 399 / 1995 x 1996 - 1991 x 1995
b) 1996 x 1995 - 996 / 1000 + 1996 x 1994
a) 399(45+55) / 1995(1996-1991)
=39900 / 9975
=4
b)
a) \(\frac{399\cdot45+55\cdot399}{1995\cdot1996-1991\cdot1995}\)
\(=\frac{399\cdot\left(45+55\right)}{1995\cdot\left(1996-1991\right)}\)
\(=\frac{399\cdot100}{1995\cdot5}\)
\(=4\)
=))
\(a,\frac{399×\left(45+55\right)}{1995×\left(1996-1991\right)}\)
\(=\frac{39900}{9975}\)
\(=4\)
Tính nhanh :
a) 399 x 45 + 55 x 399 / 1995 x 1996 - 1991 x 1995
b) 1996 x 1995 - 996 / 1000 + 1996 x 1994
a) 399(45+55) / 1995(1996-1991)
=39900 / 9975
=4
a) \(\frac{399\cdot45+55\cdot399}{1995\cdot1996-1991\cdot1995}\)
\(=\frac{399\cdot\left(45+55\right)}{1995\cdot\left(1996-1991\right)}\)
\(=\frac{399\cdot100}{1995\cdot5}\)
\(=4\)
=))
b) 1000.1995+1995.996-996
1000+1000.1994+1994.996
=1000.1995+996.1994
1000.1995+996.1994
=1
tinh nhanh biet ; 1996*1995-996 phan 1000+1996*1994
1996x1995-996
----------------------
1000+1996x1994
=(1996-996)x1995
------------------------
(1994+1996)x1000
=1000x1994
------------------------
3990x1000
=1994000
------------------
3990000
=997
--------
1995
tinh nhanh biet : 1996*1995-996 phan 1000+1996*1994
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