简便计算:一.5\9×7\11+7\9×6\11 二.32\33×32
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 12:35:57
![简便计算:一.5\9×7\11+7\9×6\11 二.32\33×32](/uploads/image/z/131909-5-9.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%EF%BC%9A%E4%B8%80.5%5C9%C3%977%5C11%EF%BC%8B7%5C9%C3%976%5C11+%E4%BA%8C.32%5C33%C3%9732)
简便计算:一.5\9×7\11+7\9×6\11 二.32\33×32
简便计算:一.5\9×7\11+7\9×6\11 二.32\33×32
简便计算:一.5\9×7\11+7\9×6\11 二.32\33×32
5/9×7/11+7/9×6/11
=7/9×5/11+7/9×6/11
=7/9×(5/11+6/11)
=7/9×1
=7/9
32/33×32
=(1-1/33)×32
=1×32 -1/33×32
=32 -32/33
=31+1/33
=31又1/33