1000+3000+6000+9000+4000+5000+7000+5000
= (1000+9000)+(3000+7000)+(6000+4000)+(5000+5000)
=10000+10000+10000+10000
=40000
t mk nha bn
(1000+5000)+(3000+7000)+(6000+4000)+9000
=6000+10000+10000+9000
=(10000+100000+(6000+9000)
=20000+15000
=35000
=(1000+9000)+(3000+7000)+(6000+4000)+(5000+5000)
=10000+10000+10000+10000=40000
1000 + 3000 + 6000 + 9000 + 4000 + 5000 + 7000 + 5000
= (1000 + 9000) + (3000 + 7000) + (6000 + 4000) + (5000 + 5000)
= 10000 + 10000 + 10000 + 10000
= 10000 . 4
= 40000
ủng hộ mk nha!
\(1000+3000+6000+9000+4000+5000+7000+5000=\left(1000+900\right)+\left(3000+7000\right)+\left(6000+4000\right)+\left(9000+1000\right)+\left(5000+5000\right)=50000\)
Sai,sai,sai hết rùi
Nói chung ai k mình đầu tiên thì mình k cho nha
(1000+9000)+(3000+7000)+(6000+4000)+(5000+5000)=
= 10000 + 10000 + 10000 + 10000
= 40000
1000 + 3000 + 6000 + 9000 + 4000 + 5000 + 7000 + 5000 = (1000 +9000) + (3000 + 7000) +(6000+ 4000) + 5000
= 10000 + 10000 +10000 +5000
= 35000