54/45 280/25 的简便计算

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/12 00:51:28
54/45 280/25 的简便计算

54/45 280/25 的简便计算
54/45 280/25 的简便计算

54/45 280/25 的简便计算
54 / 45
= 54 / (9 X 5)
= 6 / 5
= 12 / 10
= 1.2
280 / 25
= 4 X 4 X 70 / 25 X 4
= 2 X 560 / 100
= 2 X 5.6
= 11.2

54/45=(6*9)/(5*9)=6/5
280/25=4*280/(25*4)=1120/100=11.2

54/45
= (6x9)/(5x9)
=6/5
280/25
=(280/ 5 ) /5
= 56/5