Question

tính nhanh  :

100 x 95 + 50 x 2 x 89 + 200 x 408

Answer 1

=100 x 95 + 100 x 89 + 100 x 816

=100 x (95+89+816)

=100 x 1000

=100000

chúc bạn học tốt nha

Answer 2

= 100 * 95 + 100 * 89 + 100 * 2 * 408

= 100 * ( 95+ 89 + 2* 408)

= 100 * (184+ 816)

= 100 * 1000

= 100000 ( * là dấu nhân)

Answer 3

   100 x 95 + 50 x 2 x 89 + 200 x 408

= 100 x 95 + 100 x 89 + 100 x 2 x 408

= 100 x 95 + 100 x 89 + 100 x 816

= 100 x ( 95 + 89 + 816 )

= 100 x 1 000

= 100 000

Answer 4

100x95+50x2x89+200x408

=50x2x95+50x2x89+50x2x2x408

=(98+89+408x2)x50x2

=1003x100

=100300