Who found me 60 application questions including answers , which can be copied 6th grade, easy to o

Find the fraction of a number and multiply it directly by the number and the corresponding fraction (fraction).

1.There are 54 students in a class, and girls account for 4 9 of the total number of students in the class, how many girls are there?

Solution: 54 (4 9) = 24 (person).

A: There are 24 female students.

2.There are 54 students in a class, and girls account for 4 9 of the total class size, how many boys are there?

Solution: 54 (1-4 9) = 30 (person).

A: There are 30 boys.

In question 2, the number of the class is given, and the number of girls in the class is given, and the number of boys is required, so the number of boys in the class must be found before the number of boys can be found.

Exercise: 1A factory transports 60 tons of coal, and after using up 1 5, there are more tons of coal left?

2.Xiao Ming looked at a 360-page extracurricular book, how many pages did he not read after reading 3 or 4?

3.A and B process 540 parts, A completes 1 6 of the task, and B completes 3 times the workload of A. How many parts are left unmachined?

Find the fraction of who is who, and divide the former by the latter (i.e., divide the comparative quantity by the standard quantity--- which is the amount that is considered to be the unit "1").

1.There are 24 girls and 30 boys in a class, and what percentage of girls are boys?

Solution: 24 30 = 4 5

Answer: Girls are 4 5 boys.

2.There are 54 students in a class, 30 boys, and what percentage of the girls are boys?

Solution: (54-30) 30=4 5

Answer: Girls are 4 5 boys.

Whoever is a fraction more (or less) than whom, divide the latter by the amount of the former more (or less) than the latter.

There are 24 girls and 30 boys in a class, how many girls are less than boys? How many more boys than girls?

Solution: There are fewer girls than boys: (30-24) 30=1 5

More boys than girls: (30-24) 24=1 4

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The upper volume is still the next volume.,I can't find the last volume.,There's still a book left.。

1A wooden box contains balls of red, yellow, and blue. The number of yellow balls is red balls, the number of blue balls is 3 more than that of yellow balls, and the number of red balls is 32 more than blue balls.

2.There are 2 bags of rice, the second bag is 15kg heavier than the first bag, it is known that one-third of the first bag of rice is equal to two-sevenths of the second bag of rice, how many kg does each of the two bags of rice weigh?

3.A and B work together on a batch of parts, and when it is completed, A does five-eighths of all of them, B processes 12 parts per hour, and A takes 12 hours to do it alone. How many parts are in this batch?

4.Car A and B rushed from A to B at the same time, when car A traveled one-third of the whole journey, car B was still 24km away from place B, when car A traveled the remaining half, car B traveled half of the whole journey, and the distance between car A and B +3 = 35.

35 (3 2-2 3) = 42.

42 3 2 = 63.

42 2 3 + 3 = 31.

Answer: There are 42 yellow balls, 63 red balls, and 31 blue balls.

7 3 = 6 7 The first bag is 6 7 of the second bag

15 (1-6 7) = 105 kg.

105 6 7 = 90 kg.

A: The first bag is 90 kg, and the second bag is 105 kg.

8 1 12 = hours.

12 pcs. A: There are 240 in total.

4. (1-1 3) 1 2+1 3=2 3 When the whole process of line A is 2 3, line B is the whole process of 1 2

Then the distance ratio of A and B is: 2 3:1 2=4:3

1 3 3 4 = 1 4 When line A 1 3, line B has 1 4

24 (1-1 4) = 32 km.

A: The whole journey is 32 kilometers.

1.The circumference of the clock face is:

From 0 o'clock to 6 o'clock just walked through half a week, that is, the tip of the needle walked:

2.Let A be x, then B is 1/4 of x, and get:

x-13 one-quarter of x + 13 = 7 5

Cross multiplication. 5 (x-13) = 7 (one-fourth of x + 13).

5x-65=7x/4+91

5x-7/4*x=156

13/4x=156

x=48B: 48*1 4=12

Total: 48+12=60

3.Solution: Let the mass be x, then the first block contains 2x 7 copper, 5x 7 zinc, and the second block contains copper x 4 and 3x 4 zinc

Ratio (2x 7+x 4) (5x 7+3x 4) = 15 41 meters.

5.Let B be 3x

Then 3x=20*4 5

x=16/3

Then A = 5 * 16 3 = 80 3

1. From 0 to 6 o'clock, it has traveled 180 degrees, so the arc length is half of the circumference, and it is 1 2 (2 * decimeters.

2. Let the mass of A be x and the mass of B be y

x/y=4/1

x-13)/(y+13)=7/5

The solution is x=48, y=12, and weighs a total of 60 kg.

3. Let the mass be m, then the first block contains 2m 7 copper, 5m 7 zinc, and the second block contains m 4 copper and 3m 4 zinc

Ratio (2m 7+m 4) (5m 7+3m 4) = 15 41

、 4+1=4 7+5=12 13/ （4/5—7/12）=13/（48/60—35/60）=13/（13/60）=60

4. Make a typo, you should: cut a rope into two sections, A and B, and the first section is longer than the second section, how many meters is the original length of this rope?

A cup of brine, pour out 1/3 of the first time, pour 5 liters for the second time, pour out the remaining 1/9 for the third time, and add 4 liters for the fourth time, at this time there are 12 liters of salt water in the cup, how many liters of the original salt water?

Rewind the practice.

Now, there are 12 liters, and before the fourth there was 12-4 = 8

The third pour out 1 9, then it is 8 (1-1 9) = 9 liters, and the second pour out 5 liters is 9 + 5 = 14 liters.

The first time I poured out 1 3, it is 14 (1-1 3) = 21 liters Answer: The original salt water is 21 liters.

1) Yongfeng Farm planted 65 hectares of soybeans and 52 hectares of corn last year. What percentage more area is planted with soybeans than with corn? How many percent less is the area of corn than soybeans?

2) Yongfeng Farm planted 52 hectares of corn last year, which is 20% less than the area planted with soybeans. How many hectares of soybeans are grown? (3) Yongfeng Farm planted 52 hectares of corn last year, and the area of soybean planting was 25% more than that of corn.

How many hectares of soybeans are grown?

A has a pound of rice, B is 3 4 of A, how many pounds does B have?