35×86+21×35-35×8+35 22×26+56×74+26×34 分别用简便算法计算(要过程)快一点,谢谢(对后给多奖赏)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/23 12:23:07
![35×86+21×35-35×8+35 22×26+56×74+26×34 分别用简便算法计算(要过程)快一点,谢谢(对后给多奖赏)](/uploads/image/z/54035-35-5.jpg?t=35%C3%9786%2B21%C3%9735-35%C3%978%2B35+22%C3%9726%2B56%C3%9774%2B26%C3%9734+%E5%88%86%E5%88%AB%E7%94%A8%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E8%AE%A1%E7%AE%97%EF%BC%88%E8%A6%81%E8%BF%87%E7%A8%8B%EF%BC%89%E5%BF%AB%E4%B8%80%E7%82%B9%2C%E8%B0%A2%E8%B0%A2%EF%BC%88%E5%AF%B9%E5%90%8E%E7%BB%99%E5%A4%9A%E5%A5%96%E8%B5%8F%EF%BC%89)
35×86+21×35-35×8+35 22×26+56×74+26×34 分别用简便算法计算(要过程)快一点,谢谢(对后给多奖赏)
35×86+21×35-35×8+35 22×26+56×74+26×34 分别用简便算法计算(要过程)快一点,谢谢(对后给多奖赏)
35×86+21×35-35×8+35 22×26+56×74+26×34 分别用简便算法计算(要过程)快一点,谢谢(对后给多奖赏)
35×86+21×35-35×8+35
=35×(86+21-8+1)
=35×100
=3500
22×26+56×74+26×34
=22×26+26×34+56×74
=26×(22+34)+56×74
=26×56+56×74
=56×(26+74)
=56×100
=5600
很简单嘛,做题要有信心嘛,这题主要考差了乘法的基本运算规则。用乘法结合律。
35×86+21×35-35×8+35
=35*(86+21-8+1)
=35*(80+6+20+1-8+1)
=35*(80+20)=3500
22×26+56×74+26×34
=(22×26+26×34 )+56×74
=26*(22+34)+56×74
=26*56+56*74
=56*(26+74)
=5600