9.2×0.9+7.2用简便方法计算
来源:学生学帮网 编辑:学帮网 时间:2024/06/18 01:27:50
9.2×0.9+7.2用简便方法计算
9.2*0.9+7.2
=9.2*0.9+0.72+6.48
=9.2*0.9+0.8*0.9+6.48
=(9.2+0.8)*0.9+6.48
=9+6.48
=15.48
9.2×0.9+7.2用简便方法计算
9.2*0.9+7.2
=9.2*0.9+0.72+6.48
=9.2*0.9+0.8*0.9+6.48
=(9.2+0.8)*0.9+6.48
=9+6.48
=15.48