六年级简单计算

=34/13-8/13-5/7

=2-5/7

=9/7

25-25×99/100

=25×1-25×99/100

=25×(1-99/100)

=25×1/100

=0.25

7/13×4/17+7/13×9/17

=7/13×(4/17+9/17)

=7/13×13/17

=7/17

我六年级，请相信我，希望你满意！别忘了选择我！~_~