Question

[Nguyễn Quốc Thái]

123 x 35 + 124 x 65

Làm nhanh giúp mik nhà MN

Answer 1

[HT.Phong (9A5)]

\(123\times35+124\times65\)

\(=123\times35+\left(123+1\right)\times65\)

\(=123\times35+123\times65+65\)

\(=123\times\left(35+65\right)+65\)

\(=123\times100+65\)

\(=12300+65\)

\(=12365\)

Answer 2

[Phạm Minh Châu]

123 x 35 + 124 x 65

= 123 x 35 + 123 x 65 + 65

= 123 x (35 + 65) + 65

= 123 x 100 + 65

= 12300 + 65

= 12365