23/25+23/25*24=(能簡算的就簡算.

23/25+23/25*24=(能簡算的就簡算.


=23/25*(1+24)
=23/25*25
=23



23/45 * 28+28 * 22÷45簡算


23/45 * 28+28 * 22÷45
=28*(23/45+22/45)
=28*1
=28
祝學習進步



24*53分之19+19*53分之29(簡算)


24X53分之19+19X53分之29
=24X53分之19+29X53分之19
=(24+29)X53分之19
=53X53分之19
=19