Question

 10 + 10 +20 +20 +30 +30 = ?

Answer 1

=120 nha bạn

Answer 2

10 + 10 + 20 + 20 + 30 + 30 

= 10 x 2 + 20 x 2 + 30 x 2 

= 2 x ( 10 + 20 + 30 )

= 2 x 60 

= 120

Answer 3

120 k nha ban

Answer 4

\(10+10+20+20+30+30=120\)

Answer 5

10+10+20+20+30+30

=(10+30)+(10+30)+(20+20)

=40+40+40

=40x3

=120

Answer 6

10+10+20+20+30+30=120

k mik nha

Answer 7

\(10+10+20+20+30+30=120\)

Answer 8

=120 nha ban 

Answer 9

10+10+20+20+30+30 = 120

Answer 10

10 + 10 + 20 + 20 + 30 + 30

 = ( 10 + 30 ) + (10 + 30) + (20 + 20)

 =      40       +      40      +      40

 =               80             +        40

 =                       120

Answer 11

120