40×33+36×40+31×40
40×(33+36+31)
40×100
4000
4 x 10 x 33 + 2 x 36 x 20 + 5 x 31 x 8
= 40 x 33 + 40 x 36 + 40 x 31
= 40 x (33 + 36 + 31)
= 40 x 100 = 4000
\(4.10.33+2.36.20+5.31.8\)
\(=40.33+2.20.36+5.8.31\)
\(=40.33+40.36+40.31\)
\(=40.\left(33+36+31\right)\)
\(=40.100\)
\(=4000\)
Học tốt
4x10x33+2x36x20+5x31x8=4x10x33+2x2x10x36+5x2x4x31
=4x10x33+4x10x36+4x10x31
=4x10x(33+36+31)
=4x10x100
=4000
40×33+40×36+40×31
40×(33+36+31)
40×100
4000
\(4\times10\times33+2\times36\times20+5\times31\times8\)
\(=40\times33+36\times40+40\times31\)
\(=40\times\left(33+36+31\right)\)
\(=40\times100\)
\(=4000\)
