Question

Tính nhanh 

11+22+33+44+55+66+77+88

Answer 1

396 

k nha

Answer 2

bang 396

Answer 3

396 nhe

Answer 4

  11 + 22 + 33 + 44 + 55 + 66 + 77 + 88

= ( 11 + 88 ) + ( 22 + 77 ) + ( 33 + 66 ) + ( 44 + 55 )

= 99 + 99 + 99 + 99

= 99 x4

= 396

Answer 5

396 nha

Answer 6

11+22+33+44+55+66+77+88

=11+11x2+11x3+11x4+11x5+11x6+11x7+11x8

=11x(1+2+3+4+5+6+7+8)

=11x36

=396

Answer 7

= ( 11 + 88) + ( 22 + 77) + ( 33 + 66 ) + ( 44 + 55 )

=        99     +    99         + 99            +      99

= 99 × 4

= 396

Answer 8

 11 + 22 + 33 + 44 + 55 + 66 + 77 + 88 

=(11 + 88) + (22 + 77) + (33 + 66) + (44 + 55)

= 99 + 99 + 99 + 99

= 99 x 4

=     396

k cho mình nha

Answer 9

11 + 22 + 33 + 44 + 55 + 66 + 77 + 88

= ( 11 + 88 ) + ( 22 + 77 ) + ( 33 + 66 ) + ( 44 + 55 )

= 99 + 99 + 99 + 99

= 396