9.75*0.84怎么简便计算?
来源:学生作业学帮网 编辑:学帮网 时间:2024/07/01 06:40:21
9.75*0.84怎么简便计算?
9.75*0.84
=(10-0.25)*0.84
=(10-1/4)*0.84
=8.40-0.21
=8.19
9.75*0.84
=(10-0.25)*0.84
=10*0.84-0.25*4*0.21
=8.4-1*0.21
=8.4-0.21
=8.19
9.75*0.84
=(10-0.25)*0.84
=10*0.84-(1/4)*0.84
=8.4-0.21
=8.19