0.89×12.5-0.9×1.25的简便计算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/19 01:39:09
0.89×12.5-0.9×1.25的简便计算
0.89×12.5-0.9×1.25
=0.89×12.5-0.09×12.5
=(0.89-0.09)×12.5
=0.8×12.5
=10
=0.89×12.5-0.09×12.5
=(0.89-0.09)×12.5
=0.8×12.5
=10