8.9*1.1+15.7*8.9+6.8*1.1怎么用简便算法解答
问题描述:
8.9*1.1+15.7*8.9+6.8*1.1怎么用简便算法解答
答
1.1(8.9+6.8)+15.7*8.9=15.7(1.1+8.9)=157
答
8.9*1.1+15.7*8.9+6.8*1.1
=(8.9+6.8)*1.1+15.7*8.9
=15.7*1.1+15.7*8.9
=15.7*(1.1+8.9)
=15.7*10
=157
嘎嘎,这样可以了吧,还上小学呢吧,就学会用网络了,厉害!
答
8.9×1.1+15.7×8.9+6.8×1.1
解原式= (8.9+6.8)×1.1+15.7×8.9
= 15.7×1.1+15.7×8.9
= 15.7×(1.1+8.9)
= 15.7×10
=157