134×23+134×17-40×34
134×(23+17)-40×34
134×40-40×34
40×(134-34)
40×100
4000
134x23+134x17-40x34=134x(23+17)-40x34
=134x40-40x34
=40x(134-34)
=4000
\(134.23+134.17-40.34\)
\(=134.\left(23+17\right)-40.34\)
\(=134.40-40.34\)
\(=40.\left(134-34\right)\)
\(=40.100\)
\(=4000\)
Học tốt
\(134\times23+134\times17-40\times34\)
\(=134\times\left(23+17\right)-34\times40\)
\(=134\times40-34\times40\)
\(=40\times\left(134-34\right)\)
\(=40\times100=4000\)
Bài làm :
Ta có :
\(134.23+134.17-40.34\)
\(=134.\left(23+17\right)-40.34\)
\(=134.40-40.34\)
\(=40.\left(134-34\right)\)
\(=40.100\)
\(=4000\)
134 x 23 + 134 x 17 - 40 x 34 = 1857485
-----chúc bạn học tốt-----
