2.2*125%+7.8/80% 简便计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 11:26:42
![2.2*125%+7.8/80% 简便计算](/uploads/image/z/69057-9-7.jpg?t=2.2%2A125%25%2B7.8%2F80%25+%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
2.2*125%+7.8/80% 简便计算
2.2*125%+7.8/80% 简便计算
2.2*125%+7.8/80% 简便计算
2.2*125%+7.8/80%
=2.2*125%+7.8*125%
=(2.2+7.8)*1.25
=12.5
2.2*125%+7.8/80%
=2.2*1.25+7.8*1.25
=1.25*(2.2+7.8)
=1.25*10
=12.5
2.2*125%+7.8/80%
=2.2*1.25+7.8*1.25
=(2.2+7.8)*1.25
=10*1.25
=12.5
2.2*125%+7.8/80%
=2.2*1.25+7.8*1.25
=(2.2+7.8)*1.25
=10*1.25
=12.5
2×125%+7.8÷80%
=2×5/4+7.8×5/4
=5/4×(2+7.8)
=1.25×(10-0.2)
=12.5-0.25
=12.25