Question

1+2+3+4+5+6+7+8+9+1000 = ?

Answer 1

TL:

1+2+3+4+5+6+7+8+9+1000 = 1045

Hk tốt :3

Answer 2

1+2+3+4+5+6+7+8+9+1000=1045

Answer 3

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 +1000

= ( 1 + 9 ) + ( 2 + 8 ) + ( 3 + 7 ) + ( 4 + 6 ) + 5 + 1000 

= 10 + 10 + 10 + 10 + 5 + 1000 

= 45 + 1000 

= 1045

Answer 4

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 1000

= (1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9) + 1000

= 45 + 1000

= 1045

Answer 5

   1+2+3+4+5+6+7+8+9+1000

=(1+9)+(2+8)+(3+7)+(4+6)+5+1000

=10+10+10+10+5+1000

=40+5+1000

=45+1000

=1045

Answer 6

1+2+3+4+5+6+7+8+9+1000=(1+9)+(2+8)+(3+7)+(4+6)+(1000+5)=10x4+1005=40+1005=1045

Answer 7

Trl

 = ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8+ 9) + 1000

= 45 + 1000

= 1045

_Hc tốt

Answer 8

1+2+3+4+5+6+7+8+9+1000=1040