Question

Tính nhanh

( 18 x 987 +9 x 354 x2 -3 x 621 x 6 ) : 72

Answer 1

(18x987+9x354x2-3x621x6):72=(18x987+9x2x354-3x6x621):72=(18x987+18x354-18x621):72=18x(987+354-621):72=18x720:72=18x10=180

Answer 2

   (18 x 987 + 9 x 354 x 2 - 3 x 621 x6 ) : 72

= (18 x 987 + 18 x 354 - 18 x 621 ) : 72

= (18 x (987 + 354 - 621 ) : 72

= (18 x 720) : 72

= 12960 : 72 = 180

Answer 3

(18x987+9x354x2-3x621x6):72

=(18x987+18x354-18x621):72

=18x(987+354-621):72

=18x720:72

=18x10

=180

Answer 4

gộp( 18x987+354x18-621x18)

987+354-621=720

720x18=12 960

Answer 5

Ko bt làm