1. Write two ratios that are two fifths and make up the proportion. 2. Make up four proportions with four numbers: 4, 10, 16 and 40 Write four ratios according to 4.5 × 1.6 = 9 × 0.8
1,2:5=6:15=2/5
2,4:16=10:40,4:10=16:40,40:16=10:4,40:10=16:4
RELATED INFORMATIONS
- 1. The ratio of two ratios is 2 / 3. If you know that the difference between the front and back terms of the first ratio is 6, and the sum of the front and back terms of the second ratio is 40, write down the ratio of the two ratios
- 2. A ratio consisting of four different numbers, and the ratio of the two ratios of the ratio is two fifths
- 3. The two external terms of a ratio are 2.4 and 40 respectively, and the ratio is 1 and 1 / 2. The ratio is 1
- 4. 25 cm: 12 km=______ :______ =______ 450 G: 12 kg=______ :______ =______ 5:00: 1:40=______ :______ =______ .
- 5. 2.3.6.8.16 select four components
- 6. Can 1 / 2, 1 / 5, 5 / 8 and 1 / 4 form a proportion
- 7. Among the numbers 2, 3, 6, 8 and 16, the proportion of four numbers is ()
- 8. Use 1 / 8,5,1 / 2,20 to form a proportion, and make the ratio of the two ratios equal to 1 / 4. The proportion formula is ()
- 9. 1. Divide the eight numbers 1, 2, 3, 4, 5, 6, 7 and 8 into three groups, and calculate the sum of each group. Given that the three sums are not equal to each other, and the maximum sum is twice the minimum sum, what is the minimum sum? 2. A four digit number is composed of non-zero even digits, which is just the square of the number composed of two even digits? Those who can do more work, those who have nothing to do, please don't talk nonsense!
- 10. How to compare the size of two numbers in unit 6 of grade 6 of primary school mathematics
- 11. Add a number is it and 3.5.8 together to form three different proportions to write out! Add a number is it and 3.5.8 together to form three different proportions to write out!
- 12. How many 11 digits can be made up of 1, 2, 4, 5
- 13. 1. Using 1 / 3, 2 / 5, 25 and 30 as the four items of proportion, how many proportions can you form? Please write out what you can do 2. How many ratios can be made up of 4, 3, 6 and 8? Write them out separately
- 14. The four numbers 0.26301 are used to form two groups of proportional formulas
- 15. The proportion can be made up of 2, 5, 6 and (). The proportion with the largest ratio is () Take a look
- 16. The ratio of 3.2:0.6 is (); the ratio of 1 / 15:1 / 9 is ()
- 17. Write two ratios that are 3 / 4 to form a ratio ()
- 18. A ratio of three fifths is a ratio
- 19. Write two ratios of 0.6, and the composition ratio is______ .
- 20. Can 1 / 2 to 1 / 3 and 6 to 4 make up the proportion? 0.6 to 0.2 and 3 / 4 to 1 / 4