16 x 20 + 16 x 40 + 16 x 40

2 câu trả lời

    `16 × 20 + 16 × 40 + 16 × 40`

`= 16 × (20 + 40 + 40)`

`= 16 × 100`

`= 1600`

16 x 20 + 16 x 40 + 16 x 40

=16×(20+40+40)

=16×100

=1600