Judge whether the following two related quantities are out of proportion, and if not, what proportion.

1, the number of days is fixed, and the proportion of coal consumption per day to the total coal consumption ().

2, the diameter of the circle and the area of the ratio of ().

3. Subscribe to the number of copies of Youth Science Illustrated and the proportion of money needed ().

4, when the production time is fixed, the ratio of the number of people produced per hour to the total number of people ().

5, the dividend is certain, the ratio of divisor and quotient ().

6, in a certain distance, the ratio of the circumference of the wheel and the number of turns it turns ().

7. The ratio of the side length to the perimeter of a square ().

8. The latter term of the ratio is definite, and the former term of the ratio is directly proportional to the ratio ().

9. The relationship between A, B and C is: A= If B is certain, the ratio of A to C is ().

If c is certain, the ratio of a to b is ().

10, if Y= 10X, the ratio of x to y (); If Y=, the ratio of x to y ().

If =Y, the ratio of x to y ().

1 1, the size of the fraction is certain, and its numerator is proportional to the denominator ().

12, the class size must be fixed, and the ratio of attendance to attendance ().

13, the ratio of the area of a cube to its surface area ().

14, in a certain period of time, the time spent making a part is directly proportional to the number of parts made ().

15, the ratio of the radius of the circle to the area ().

16, the height of the cone is certain, and the radius at the bottom of the cone is directly proportional to its volume ().

17, 4X=8Y, the ratio of x to y ().

18, the diameter of the wheel is fixed, and the distance traveled is proportional to the number of revolutions of the wheel ().

19, the radius of the bottom of the cylinder is certain, and the height of the cylinder is proportional to the volume of the cylinder ().

20, fractional value is certain, the ratio of numerator and denominator ().

2 1, the ratio of side length to area of a square ().

22. When the total weight of wheat is constant, the ratio of flour yield to flour weight is ().

23, the area of the triangle is certain, the ratio of bottom to height is ().

24, do a distance, the ratio of the distance done and not done ().

25, the length of the rectangle is certain, the ratio of width to circumference ().

26, the ratio of the radius and circumference of a circle ().

27, the total output is certain, the ratio of single output to quantity ().

28. At the same time, the ratio of the height of the pole to the length of the shadow ().

29, do a project, work efficiency and working time () ratio.

30, the car from a to b, driving time and speed () ratio.

Second, judge the question, tick the right one and tick the wrong one.

1, speed is inversely proportional to time. ( )

The distance on the map is proportional to the actual distance. ( )

The base of triangle is definite, and its area is out of proportion to its height. ( )

4. The distance on the map is fixed, and the actual distance is proportional to the scale. ( )

5. The salt production is certain, and the weight of salt is directly proportional to the weight of seawater. ( )

This is quite good.

The garden team is going to plant a batch of saplings. Plant 15 trees on the first day and 136 trees on the second day. At this time, the ratio of remaining trees to planted trees is 3: 5. How many saplings are there in this batch?

The daily coal consumption of Xinhua Cement Plant has been reduced from 600 tons to 560 tons now. Coal used to burn for 84 days, how many days can it burn now?

Equation solvable

And /shti/ Liu/10452.htm is worth seeing!

As for how to learn math well ... just study hard.

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