328-(284-172)简便计算

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 11:44:43

328-(284-172)简便计算
328-(284-172)简便计算

328-(284-172)简便计算
328-(284-172)
=328-284+172
=328+172-284
=500-284
=216

328+172-284 =216

328-(284-172)
=328-284+172
=328+172-284
=500-284
=216

328-(284-172)
=328-284+172
=328+172-284
=500-284
=216

原式=328+172-284 =216