Simplify the following ratios and calculate the ratio: (with process) 2 / 5 ∶ 1 / 4 1 / 20 ∶ 1 / 4 0.25 ∶ 1 48 / 32

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• 1. 1.32:12 2.3.5:1.25 3.0.05:3 4.1:0.05 6.2.45:1.4 [ratio]
• 2. 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
• 3. The number of large cubes is 1 23 4 5 6 7 8, the number of small cubes is 8 16 24 32 40 48 56 64, can't four small cubes spell the big one?
• 4. The ratio: 1 / 4 ton: 375 kg; 2 / 3: 45; 1 / 2: 0.75; 3 / 5 ton: 400 kg
• 5. 5 / 8 ton: 750 kg ratio 1.2:5 / 4 ratio 2.5 meter: 50 cm ratio
• 6. To calculate the ratio, the formula is 0.52:1.3, 2:12:7, and the simple ratio is 1.25:2.5, 4:0.125
• 7. The ratio is 3.75:2.5 2 / 3:1 / 4
• 8. (6 out of 7 + 2 out of 5) × 7 × 5, calculated by a simple method
• 9. (1.25 + 2.5) × 16 = 1.25 × 3.7 × 0.8 = 3.4 × 9 + 3.4 = 9.24 × 9 + 3.4 = simple calculation
• 10. 5×[6.8-（1.6+3.6÷0.9）]÷84．
• 11. The ratio is 0.36:1.36:0.32 2:25 120.25:6 5:8
• 12. 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
• 13. 3 √ 8-5 √ 32 7 √ 3 - √ 1 / 3 √ 40-5 √ 1 / 10 + √ 10
• 14. Simplification: (1) 7 √ 3 - √ 1 / 3 (2) 3 √ 8-5 √ 32 (3) √ 4 √ 1 / 10 + √ 10
• 15. 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:
• 16. If 1.78 + [1 and 7 / 8 * 0.8-3 (x + 3 / 9)] / 5 / 6 = 0.28, find X
• 17. -5+8-28-10 0-3.4+5-4.6 _ 7 / 2-9 / 4 + 3 / 2 3 / 4-1.75-0-3
• 18. 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)
• 19. 4 out of 5: 8 out of 9?
• 20. 5:28:0.9 ratio Ratio