Find the ratio of the following ratios. 14; 35 2; 12.5 3 / 5; 7 2 / 7 (with process) Find the ratio of the following ratios 14. 35 2; 12.5 3 / 5; 2 / 7 (with process) Turn the following into the simplest integer ratio 40; 125; 18; 1.8 2 / 5; 1 / 4 (with process)

14: 35 = 14 / 35 2:12.5 = 4:25 3 / 5:2 / 7 = 21:10 = 2 / 5 = 4 / 2540:125 = 8:25 (before and after divided by 8) 18:1.8 = 10:1 (before and after divided by 1.8) 2 / 5:1 / 4 = 8:5 (before and after multiplied by 20)

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1. -5+8-28-10 0-3.4+5-4.6 _ 7 / 2-9 / 4 + 3 / 2 3 / 4-1.75-0-3
2. If 1.78 + [1 and 7 / 8 * 0.8-3 (x + 3 / 9)] / 5 / 6 = 0.28, find X
3. Write 8 / 9, 8 / 8 / 5, 7 / 3, 6 / 5, 12 / 7, 28 / 9 to more than 3 / 4 or less than 3 / 4 More than 3 / 4: Less than 3 / 4:
4. Simplification: (1) 7 √ 3 - √ 1 / 3 (2) 3 √ 8-5 √ 32 (3) √ 4 √ 1 / 10 + √ 10
5. 3 √ 8-5 √ 32 7 √ 3 - √ 1 / 3 √ 40-5 √ 1 / 10 + √ 10
6. Simplify the following ratio: 7:4:3 20:6:5 1:0.75 120:32 36:5:9 10 2:3:9:4:8:5:4 1.25:0.25
7. The ratio is 0.36:1.36:0.32 2:25 120.25:6 5:8
8. Simplify the following ratios and calculate the ratio: (with process) 2 / 5 ∶ 1 / 4 1 / 20 ∶ 1 / 4 0.25 ∶ 1 48 / 32
9. 1.32:12 2.3.5:1.25 3.0.05:3 4.1:0.05 6.2.45:1.4 [ratio]
10. The data of time and temperature in an experiment are recorded in the following table: time 0,5,10,15,20,25,30, temperature 8,16,24,32,40,48,56 (1) If the temperature change is uniform, calculate the temperature when the time is Tmin. (2) calculate the temperature when the time is 16min
11. 4 out of 5: 8 out of 9?
12. 5:28:0.9 ratio Ratio
13. The ratio is 9:3.6 2 / 3 24 moleculars 32
14. Ratio: 9:3.6 32 / 24 2 / 3
15. 2 / 3 to 19 / 3 to 8 / 5 to 20.25 to 0.75
16. 1:0.75:8 = 4:0.25 = 1.2:2 and 1:4 = 3:4 = 0.25:25 = 8:2 = ratio
17. 31.4 divided by 3.14 = how much? The number in divided by 2, to calculate the formula
18. A job, originally planned to take 4 hours to complete, in order to pursue the perfect details, now 5 hours to complete, work efficiency than the original 1. A job, originally planned to take 4 hours to complete, in order to pursue the perfect details, now 5 hours to complete, work efficiency than the original reduced by several percent?
19. Simple calculation: 0.627 × 13 + 0.52 × 62.7 + 3.5 × 6.27
20. It takes 9 seconds from the first floor to the second floor. The number of stairs between each two floors is the same. How long does it take from the first floor to the sixth floor?