Question

2 x 53 x 13 + 4 x 6 x 87 - 3 x 8 x40

Tinh nhanh

Answer 1

Sai đề :

2 x 53 x 12 + 4 x 6 x 87 - 3 x 8 x 40

= 12 x 2 x 53 + 4 x 6 x 87 - 3 x 8 x 40

= 24 x 53 + 24 x 87 - 24 x 40

= 24 x ( 53 + 87 - 40 )

= 24 x ( 140 - 40 )

= 24 x 100

= 2400

Answer 2

Sai đề :

2 x 53 x 12 + 4 x 6 x 87 - 3 x 8 x 40

= 12 x 2 x 53 + 4 x 6 x 87 - 3 x 8 x 40

= 24 x 53 + 24 x 87 - 24 x 40

= 24 x ( 53 + 87 - 40 )

= 24 x ( 140 - 40 )

= 24 x 100

= 2400

Answer 3

Sai đề :

2 x 53 x 12 + 4 x 6 x 87 - 3 x 8 x 40

= 12 x 2 x 53 + 4 x 6 x 87 - 3 x 8 x 40

= 24 x 53 + 24 x 87 - 24 x 40

= 24 x ( 53 + 87 - 40 )

= 24 x ( 140 - 40 )

= 24 x 100

= 2400