9.6*1.5/2.4简便计算 8.1/1.8简便计算 5.6/3.5简便计算
问题描述:
9.6*1.5/2.4简便计算 8.1/1.8简便计算 5.6/3.5简便计算
答
①原式=9.6/2.4x1.5=4x1.5=6
②原式=(8.1/9)/(1.8/9)
=0.9/0.2
=9/2
③原式=(5.6/7)/(3.5/7)
=0.8/0.5
=8/5
答
9.6*1.5/2.4
=(9.6/2.4)*1.5
=4*1.5
=6
8.1/1.8
=(0.9*9)/(0.9*2)
=9/2
=4.5
5.6/3.5
=(0.7*8)/(0.7*5)
=8/5
=1.6