3.82乘9.9加0.382用简便方法计算急
问题描述:
3.82乘9.9加0.382用简便方法计算急
答
3.82乘9.9加0.382
=3.82×9.9+3.82×0.1
=3.82×(9.9+0.1)
=3.82×10
=38.2