作业帮34.5*76.5-345*6.42-123*1.45的简算
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 16:42:19
34.5*76.5-345*6.42-123*1.45的简算
34.5*76.5-345*6.42-123*1.45的简算
34.5*76.5-345*6.42-123*1.45的简算
34.5*76.5-345*6.42-123*1.45
=34.5*76.5-34.5*64.2-123*1.45
=34.5*(76.5-64.2)-12.3*14.5
=34.5*12.3-12.3*14.5
=12.3*(34.5-14.5)
=12.3*20
=246
34.5*76.5-345*6.42-123*1.45
=34.5*76.5-34.5*64.2-123*1.45
=34.5*(76.5-64.2)-123*1.45
=34.5*12.3-12.3*14.5
=(34.5-14.5)*12.3
=20*12.3
=246
34.5*76.5-345*6.42-123*1.45
=345*7.65-345*6.42-123*1.45
=345*1.23-145*1.23
=200*1.23
=246
满意请采纳~~