Question

Tính nhanh:

99   9   88   9 =11

 

Answer 1

99 9 88 9 = 11

= 99 : 9 + 88 : 9

= ( 11 + 88 ) : 9

= 99 : 9

= 11

Answer 2

99 9 88 9

=99:9+88:9

=(11+88):9

=99:9

=11

Đ/S:tích

Answer 3

99 9 88 9

= 99 : 9 + 88 : 9

= ( 11 + 88 ) : 9

= 99 : 9

= 11

Answer 4

=99 : 9 + 88 : 9

=(11+88) : 9

=99 :9

=11

Answer 5

99:9+88:9

Answer 6

99    9    88     9 = 11

=(99:9+88):9=11

=(11+88):9=11

=99:9

=11