Trả lời ;>..............................................///
2008 x 99 + 2008
= 2008 x 99
= 198792
624 x 725 + 725 x 376
= 624 x 376
= 234624
2009 x 101 - 2009
= 2009 x 101
= 202909
1996 x 1001 - 1896
= 1997996 - 1896
= 1996100
Hk otots,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
k nhé
2008x99+2008 624x725+725x376 2009x101-2009 1996x1001-1996
=2008x99+2008x1 =(624+376)x725 =2009x101-2009x1 =1996x1001-1996x1
=2008x(99+1) =1000x725 =2009x(101-1) =1996x(1001-1)
=2008x100 =725000 =2009x100 =1996x1000
=200800 =200900 =1996000
2008x99+2008
=2008x99+2008x1
=2008x(99+1)
=2008x100
=200800
624x725+725x376
=725x(624+376)
=725x1000
=725000
2009x101-2009
=2009x101-2009x1
=2009x(101-1)
=2009x100
=200900
1996x1001-1996
=1996x1001-1996x1
=1996x(1001-1)
=1996x1000
=1996000
chúc bn hk tốt
2008 \(\times\)99 + 2008
= 2008 \(\times\)99 + 2008 \(\times\)1
= 2008\(\times\)( 99+1)
=2008\(\times\)100 = 200800
2009\(\times\)101 - 2009
= 2009 \(\times\)101 - 2009\(\times\)1
= 2009\(\times\)(101 - 1)
= 2009\(\times\)100 = 200900
624 \(\times\)725 + 725\(\times\)376
= 725 \(\times\)(624+ 376)
= 725\(\times\)1000 = 725000
1996 \(\times\)1001 - 1896
= 1996100. Cách làm tương tự nha bạn
2008 x 99 + 2008
=2008 x (99+1)
=2008 x 100
=200800
2009x101-2009
=2009 x (101 - 1)
=2009 x 100
=200900
624 x 725 + 725 x 376
= 725 x (624+376)
=725 x 1000
=725000
1996 x 1001 - 1896
=1996 x 1001 -1001 x 895
=1001 x ( 1996-895)
=1001 x 1101
=1102101
chúc em học giỏi nha
