Find a primary school 6th grade math problem and a 6th grade math problem

The greatest common factor of 15 and 20 is 3

The least common multiple is 60

The greatest common factor of 12 and 6 is 6

The least common multiple is 12

With short division: 15, 20, greatest common factor, 5, least common multiple, 60

12 6 The greatest common factor is 6, and the least common multiple is 12

The first group: the greatest common factor is: 5, look at the common factor.

The second group: the greatest common factor is: 6

The least common multiple is 12

So the greatest common divisor is 5

The least common multiple is 5*3*2*2=60

So the greatest common divisor is 6

The least common multiple is 12

1) Greatest common factor: 5 Least common multiple: 60

2) Greatest common factor: 6 Least common multiple: 12

The common factor of 15: 1 3 5 15

The common factor of 20: 1 2 4 5 10 20

Greatest common factor: 5

The common factor of 12: 1 2 3 4 6 12

Common factor of 6: 1 2 3 6

Greatest common factor: 6

1) Greatest common factor: 5 Least common multiple: 60

2) Greatest common factor: 6 Least common multiple: 12

15 and 20:

Greatest common factor: 5

Least common multiple: 60

12 and 6: Greatest common factor: 6

Least common multiple: 12

Use short division to find it.

30% of the books were lent on the first day;

The second day is equivalent to 120% of the first day, i.e. 30% of the books borrowed the next day 120% = 36%.

Therefore, the second day borrowed 36%-30%=6% more of the books than on the first day

On the second day, I borrowed 30 more copies than on the first day.

Therefore, the bookstore shipped a total of 30 6% = 500 children's books.

Combined: 30 (30% 120%-30%) = 500 Books, the number of books in this batch is x.

Day 2 - Day 1 = 30

120% ×30%x－30%x＝30

The calculation process is omitted).

x = 500 for a total of 500 books.

2 (1 2 + 1 3) = 1 and 2 3

1.The length of a rectangle is 1 2 cm, the width is 1 3 cm, the area of this rectangle is (1 6) square centimeters, and the circumference is (1 2 3) cm.

The number of basketballs is 125 of footballs, and the number of basketballs is more than that of footballs ( ) The number of footballs is less than that of basketball ( ).

2. The number of volleyballs is 18 more than basketball, and the number of volleyballs is equivalent to that of basketball

3. The number of soccer balls is 20 less than that of basketball. 18 more volleyball than basketball, ( the most balls, ( the least number of balls.

4. There are 60 fruit trees planted in the orchard, of which 36 are apple trees. Apple trees account for ( ) and the rest of the fruit trees account for ( ).

5. What percentage of the class is the number of girls = (

A few percent more poplars than cypresses = (

Actual savings of a few percent = (

A few percent more than planned = (

40 is ( ) 36 of 10 is ( ) 50 kg of 60 is ( ) kg, 800 m of 25 is ( ) meter.

1. Fill in the blanks.

1. The number of basketballs is 125 of footballs, and there are more basketballs than footballs ( ) The number of footballs is less than that of basketball ( ).

2. The number of volleyballs is 18 more than basketball, and the number of volleyballs is equivalent to that of basketball

3. The number of soccer balls is 20 less than that of basketball. 18 more volleyball than basketball, ( the most balls, ( the least number of balls.

4. There are 60 fruit trees planted in the orchard, of which 36 are apple trees. Apple trees account for ( ) and the rest of the fruit trees account for ( ).

5. What percentage of the class is the number of girls = (

A few percent more poplars than cypresses = (

Actual savings of a few percent = (

A few percent more than planned = (

40 is ( ) 36 of 10 is ( ) 50 kg of 60 is ( ) kg, 800 m of 25 is ( ) meter.

7. For a batch of goods with an import price of a yuan, the tax rate and freight are 10 of the value of the goods, and the cost of this batch of goods is ( ) yuan.

2. Solve practical problems.

1. There are 25 white rabbits and 30 gray rabbits. What percentage more gray rabbit than white rabbit?

2. The Si Gourmet Salt Factory planned to produce 450 tons of salt last month, but actually produced 480 tons. How many percent more is actually produced than planned?

3. Xiao Ming's family uses 80 kilowatt-hours of electricity in August, Xiaoliang's family saves 10 kilowatt-hours compared with Xiaoming's family, and Xiaoliang's family saves 10 kilowatt-hours compared with Xiaoming's family in August.

4. A fertilizer plant actually produced 5,000 tons of fertilizer in September, which was 500 tons more than planned. How many percent is overproduction than planned?

5. The total income of the blue hat factory last year reached 9 million yuan, and according to the national tax rate, it should pay 17 value-added tax. How much VAT do you have to pay?

6. Dad bought a family car worth 120,000 yuan. A vehicle purchase tax of 10 is payable according to the regulations. How much did it cost Dad to buy this car?

Is it the first or second volume in the sixth grade? Is it to solve the equation? Solution ratio? Practical problems? Positive and negative proportions? ......

The length of the round steel is 9*8 4=18cm

Volume 5*5*18*cubic meters cm.

s=, the bottom area of the water is s',8s=4s',v=9s', or it can be v=