“数与代数”总复习自主检测1:1600 3.7 0.4 44/7 3/4 42:1/4 370 5/3 625 0.5 3/43: 2 1/12【请关注零五网:https://www.05wang.com/】4:⑴ 600008826 60000 6 ⑵ 9 36 1:2=2:4(不唯一) ⑶ 98 ⑷2/3 605: (1) C (2) A6: 220÷(1+10%) =220÷1.1 =200(人次)7: 30x20÷25-20 =24-20 =4(天)8: 2x72÷12 =12(小时)【请关注零五网:https://www.05wang.com/】9: 解设去用x小时,回用(4.5-x)小时 800x=640x(4.5-x) 800x+640x=640x4 |