Question

333*777-222*666/555*999如何简便运算

Answer 1

333*777-222*666/555*999
=111^2*（21-12*999/555)
=111^2(21-20.6)
=111^2*0.4
=111*44.4
=4440+444+44.4
=4932.4

Answer 2

(333x777-222x666)/(555x999)
=[(3x111)x(7x111)-(2x111)x(6x111)]/[(5x111)x(9x111)]
=(3x7-2x6)/(5x9)
=9/45
=1/5

Answer 3

333*777-222*666/555*999
=3*111*7*111-2*111*6*111/5*111*9*111
=3*7-2*6/5*9
=21-12/45
=1/5

Answer 4

= (3*7-2*6/5*9) * 111

Answer 5

=111*3*111*7-2*111*6*111/（5*111）*9*111=111*111*3*7-2*6*111*111/5/111*9*111=111*111*21-12*9*111*111*111/111/5=111*111*21-111*111*12*9/5=111*111*（21-12*9/5）=111*111*（21-21.6）=111*111*（-0.6）=-7392.6