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( 2003 x 58 + 52 x 2003 - 10 x 2003 ) + ( 670 - 335 ) x 100
= 2003 x ( 58 + 52 -10 ) + 315 x 100
= 2003 x 100 + 315 x 100
= 200300 + 31500
= 231800
( 2003 x 58 + 52 x 2003 - 10 x 2003 ) + ( 670 - 355 ) x 100
= 200300 + 315 x100
= 200300 + 31500
= 231800
( 2003 x 58 + 52 x 2003 - 10 x 2003 ) + ( 670 - 355 ) x 100
= 200300 + 315 x100
= 200300 + 31500
= 231800
a, (1 + 3 + 5 + 7+ ... + 2003 + 2005) x (125125 x 127 - 127127 x125)
= (1 + 3 + 5 +...+2003 + 2005) x (125 x 1001 x 127 - 127x1001 x 125)
= (1 + 3 + 5 +...+ 2003 + 2005) x 0
= 0
a =2004.10+1992+2002+2004
= 2004(10+1)+3994
= 2004.11+3994=26038
b =2003(1+493+1520)=2003.2024=4054072
\(\frac{2004\times13+1990+2002\times2003}{2003+2003\times501+506\times2003}=\frac{2004\times13+1990+2002}{\left(2003+1\right)\times501+506}=\frac{2004\times4205}{2004\times1007}=\frac{4205}{1007}\)
1)2003x2005+200 2)2004x2004+199
=(200x10+3)x2005+200 =2004x2004+(200-1)
=200x10x2005+3x2005+200 =2004x2004+200-1
=200x(10x2005+1)+3x2005 =(200x10+4)x2004+200-1
=200x20051+6015 =200x10x2004+4x2004+200-1
=4010200+6015 =200x(10x2004+1)+4x2004-1
=4016215 =200x20041+8016-1
=4008200+8015 =4016215
chọn mình nha
\(=2003\times\left(58+52-10\right)+335\times100\)
\(=100\times\left(2003+335\right)=233800\)
(2003 x 58 + 52 x 2003 - 10 x 2003) + (670-335) x 100
= 2003 x ( 58 + 52 - 10 ) + 335 x 100
= 2003 x 100 + 335 x 100
= ( 2003 + 335 ) x 100
= 2338 x 100
233 800