24乘3/25 简便计算
第1个回答 2014-10-18
4/9×4/15+4/15×5/9=4/15×（4/9+5/9）=4/15×1=4/15
24×3/25=25×3/25-3/25=3-3/25=2又22/25本回答被提问者采纳
24×3/25=25×3/25-3/25=3-3/25=2又22/25本回答被提问者采纳
第2个回答 2014-10-18
4/9×4/15+4/15×5/9
=（9/4+9/5）×15/4
=1×4/15
=4/15
=（9/4+9/5）×15/4
=1×4/15
=4/15
