Ask for two questions 2 and 3, the fifth grade of primary school

2 She wept so bitterly that her tears flowed like waterfalls.

3 When winter came, it snowed heavily, and the earth was as white as the white beard of an old man.

4 Once the mouse falls into the hands of the cat, don't want to live!

She cried so badly that she cried so much that she cried so much.

Winter is coming, it is snowing heavily, and the ground is like a thick plush carpet.

2. She cried so sadly that her tears flowed like a river.

3. Winter is coming, it is snowing heavily, and the earth is like a white carpet.

4. If the mouse falls into the hands of the cat, the mouse will not want to live.

She cried so hard that her tears flowed like a river.

After the heavy snowfall, the ground was completely white, as if covered with a white carpet.

If the mouse falls into the hands of the cat, the mouse will not want to live.

2. She cried so sadly that it seemed that the sun would fall into the abyss with her tears, and the sea would dry up with her tears.

3. After the heavy snowfall, the ground is completely white, as if covered with a white carpet.

2) She cried so sadly that her tears were about to become a river (3) Winter came, and it snowed like goose feathers, and the ground seemed to be covered with a white carpet. Hope!!

2.She cried sadly, and her tears gathered into a river.

3.Winter came, and it snowed heavily, as if the earth was dressed in a white coat.

She was so sad that she shed a lot of tears and drowned the United States, Japan, and South Korea.

There are 7 types in total, which are:

1 gram 3 grams. 5 grams 1 + 3 = 4 grams.

1 + 5 = 6 grams.

3 + 5 = 8 grams.

1 + 3 + 5 = 9 grams.

1 piece: 1 gram, 3 grams, 5 grams 3 types 2 pieces: 4 grams, 6 grams, 8 grams 3 types of 3 pieces: 9 grams 1 type of 7 types in total.

Choose a weight: 1g, 3g, 5g

Choose two weights: (1+3)g, (1+5)g, (3+5)g, and choose three weights: (1+3+5)g

3*2*1=6 6+1=7

All are weighed) 1 gram 3 grams.

5 grams 1 + 3 = 4 grams.

1 + 5 = 6 grams.

3 + 5 = 8 grams.

1 + 3 + 5 = 9 grams.

Those who participate in mathematics account for all.

2/3 + 3/4-1

8/12 + 9/12 - 12/12

5 out of 12

The water in the a-tank is 90 40 20

72000 (cubic centimeters).

Figure b The water in the tank is high.

h=volume of water in the bottom area.

60 (cm).

So the height of the water in the tank in Figure B is 60 cm

Let the number of armor be x

2/3）x=30×40%

The solution is x=18

So the number A is 18

1.A computer first rose by three-tenths, and then by two-fifths, and now there is such a computer at a price of 3,000 yuan per computer, how much yuan per computer was originally there?

Set the original $ x per computer.

x*[1+(3/10)]*1+(2/5)]=3000

x*x=original per computer.

2.A tractor can plough six-fifths of a hectare in three-quarters of an hour, plowing (8/5) hectares per hour and plowing 1 hectare in (5/8) hours.

3.There are 68,131 books, which are evenly distributed among the lost primary schools, and the number of known schools is a prime number, and there are 28 books left in the end.

68103 decomposition prime factor = 3 * 3 * 7 * 23 * 47

Evenly distributed among the primary schools in the urban area, there are still 28 schools left in the end, so the number of schools is greater than 28.

It is known that the number of schools is a prime number, so the number of schools is 47.

There are 47 primary schools in the city.

4.75% of a number is 10 less than four-fifths of it, what is this number?

This number is 200

5.There were 3 kinds of drinks at a meal, and 65 bottles of the three drinks were shared after the meal; On average, every 2 people drink a bottle, every 3 people drink a bottle of B, and every 4 people drink a bottle of C. Q: What is the number of people attending the meal?

The number of participants in the meeting was 60.

6.There is a barrel of oil, the first time it uses one-fifth of this barrel of oil, the second time it uses 2 kg less than the first, and there are 20 kg left, how many kilograms does this barrel of oil originally weigh?

Suppose the barrel of oil originally weighed x kilograms.

1/5)x+(1/5)x-2+20=x

3/5)x=18

x = 30 This barrel of oil originally weighed 30 kilograms.

1.The volume of a cuboid timber is cubic decimeters, and when it is sawn into 4 sections to become 4 cuboids, the surface area increases by square decimeters. How many decimeters is this log long?

It is sawn into 4 sections, and the number of cross-sections to increase is.

4 1) 2 6 pcs.

The cross-sectional area is.

Square points imitate Qi rice.

This log is long.

Dm. 2.A number divided by 6 is left with 1, divided by 8 and left with 1, knowing that this number is between 40 and 50, find this number.

This problem is actually a number of 1 more than the common multiple between 40 and 50 between 6 and 8 in the Great Hole of Regret.

The least common multiple of 6 and 8 is 2 2 2 3 24

This number is 48 1 49

If a flower shop buys a batch of flowers, there will be 3 more flowers for every 8 flowers tied into a bouquet, and 3 more flowers for every 9 flowers tied into a bouquet, how many flowers will this flower shop buy at least?

Find the least common multiple.

8*9+3=75 flowers.

A: The flower shop has at least 75 flowers.