15,16,13,19,11,22,( ),25,7,( ),…… 1,计算:10.37×3.4+1.7×19.26= (2)7.48×369369－3.69×748748找规律填数15,16,13,19,11,22,( ),25,7,( )
问题描述：
15,16,13,19,11,22,( ),25,7,( ),…… 1,计算:10.37×3.4+1.7×19.26= (2)7.48×369369－3.69×748748
找规律填数15,16,13,19,11,22,( ),25,7,( )
答
15,16,13,19,11,22,(9 ),25,7,(28 )
隔一个看一个，分成两组
10.37×3.4+1.7×19.26=10.37*2*1.7+1.7*19.26＝1.7*（20.74+19.26）＝1.7*40＝68
7.48×369369－3.69×748748＝7.48*3.69*100100-7.48*3.69*100100＝0
答
上面
答
15,16,13,19,11,22,(9 ),25,7,(28 )隔一个看一个,分成两组 10.37×3.4+1.7×19.26=10.37*2*1.7+1.7*19.26＝1.7*（20.74+19.26）＝1.7*40＝687.48×369369－3.69×748748＝7.48*3.69*100100-7.48*3.69*100100＝0...