如何用简便方法计算77.7×90+111×37?
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:2024/07/29 11:20:41
如何用简便方法计算77.7×90+111×37?
![如何用简便方法计算77.7×90+111×37?](/uploads/image/z/20482-34-2.jpg?t=%E5%A6%82%E4%BD%95%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%9777.7%C3%9790%2B111%C3%9737%3F)
77.7×90+111×37
=777×9+111×37
=111×7×9+111×37
=111×63+111×37
=111×(63+37)
=111×100
=11100
=777×9+111×37
=111×7×9+111×37
=111×63+111×37
=111×(63+37)
=111×100
=11100