5252*48-4848*52的简便算法
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:2024/07/23 00:41:37
5252*48-4848*52的简便算法
![5252*48-4848*52的简便算法](/uploads/image/z/19765134-54-4.jpg?t=5252%2A48-4848%2A52%E7%9A%84%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95)
原式 = (5200+52)*48-(4800+48)*52
= 5200*48 - 4800*52
= 5200*(50-2)-4800*(50+2)
= 5200*50-4800*50-5200*2-4800*2
= (5200+4800)*50 - (5200+4800)*2
= 10000 * (50 - 2)
= 10000 * 48
= 480000
再问: 5252*48-4848*52 =52*101*48-48*101*52 =(101-101)*48*52 =0*48*52 =0 这样才对
= 5200*48 - 4800*52
= 5200*(50-2)-4800*(50+2)
= 5200*50-4800*50-5200*2-4800*2
= (5200+4800)*50 - (5200+4800)*2
= 10000 * (50 - 2)
= 10000 * 48
= 480000
再问: 5252*48-4848*52 =52*101*48-48*101*52 =(101-101)*48*52 =0*48*52 =0 这样才对