0.27×7.2—2.7×0.71怎么算?可以简算就简算吧!
问题描述:
0.27×7.2—2.7×0.71怎么算?
可以简算就简算吧!
答
原式=2.7÷10×7.2-2.7×0.71
=2.7×0.72-2.7×0.71
=2.7×(0.72-0.71)
=2.7×0.01
=0.027
答
变成2.7*0.72-2.7*0.71
提取2.7得2.7*(0.72-0.71)
答
0.27×7.2 - 2.7×0.71
=0.27×7.2 - 0.27×7.1
=0.27×(7.2 - 7.1)
=0.27×0.1
=0.027