35 x 49 + 51 x 36
=(36-1) x 49 + 51 x 36
=36 x 49 - 1 x 49 + 51 x 36
=36 x 49 - 49 + 51 x 36
=36 x (49+51) - 49
=36 x 100 - 49
=3600 - 49
=3551
Đúng 1
Bình luận (1)
\(\text{35 x 49 + 51 x 36 }\)
\(\text{= 1715 + 1836}\)
\(\text{= 3551}\)
Đúng 0
Bình luận (0)
\(35.49+51.36\)
\(=35.49+51.\left(35+1\right)\)
\(=35.49+51.35+51\)
\(=35.\left(49+51\right)+51\)
\(=35.100+51=3551\)
Đúng 3
Bình luận (0)